Season 1, Episode 1 – Aired: 9/20/1968
Steve McGarrett, head of Hawaii Five-O, investigates the death of a close friend who appears to have drowned. Steve's knowledge about his friend and a mysterious white substance lead him into a high-level intelligence matter involving a foreign agent.
Season 1, Episode 2 – Aired: 9/20/1968
McGarrett learns about the assassination campaign against U.S. agents. U.S. intelligence asks him to act as bait. McGarrett cooperates in the fanciful and dangerous attempt to provide false information to the Chinese agent (Wo Fat) who is pursuing the mysterious person code-named Control.
Season 1, Episode 3 – Aired: 9/26/1968
Full Fathom Five
Rich widows from the mainland are turning up missing soon after visiting the Hawaiian Islands. McGarrett suspects that a single person or group is behind the disappearances. Thus, Five-O sends a policewoman undercover on a cruise as bait.
Season 1, Episode 4 – Aired: 10/3/1968
Strangers In Our Own Land
While investigating the assassination of a native-Hawaiian official, McGarrett learns that some fellow Hawaiians resented the victim's pro-development policies.
Season 1, Episode 5 – Aired: 10/10/1968
Tiger By The Tail
A struggling young singer plans his own kidnapping as a publicity stunt. After his unsuspecting wealthy father offers to pay any amount of money, the singer's associates turn on him in an attempt to get the ransom.
Season 1, Episode 6 – Aired: 10/17/1968
McGarrett protects a suspected gangster (Tokura) from Japanese assassins, even as he and Five-O try to find evidence linking Tokura to organized crime.
Season 1, Episode 7 – Aired: 11/7/1968
.... And They Painted Daisies On His Coffin
While off-duty, Danno chases down a young teenager who was trying to break into a car. Danno is stunned when he accidentally kills the boy. When investigators can't locate the boy's gun, Danno is indicted for first-degree murder. Only McGarrett can clear him, by locating the gun and the young woman who may have removed it from the scene of the shooting.
Season 1, Episode 8 – Aired: 11/14/1968
Twenty-Four Karat Kill
A young mother is murdered after shopping at a fish market. When the crime is tied to a gold-smuggling operation, U.S. Treasury agent Philip Grey (Richard Denning) assists McGarrett and Five-O in the investigation. Grey convinces McGarrett that the best strategy is to lure one of the smugglers out, using a female undercover agent as bait.
Season 1, Episode 9 – Aired: 11/21/1968
The Ways of Love
A woman jumps out of a car during a high-speed chase and suffers fatal injuries. She is wearing an expensive stud earring that is part of a large cache of jewelry stolen from a foreign consulate. Under pressure from the state attorney general to recover the jewelry, McGarrett goes undercover in a California county jail and participates in a prison break.
Season 1, Episode 10 – Aired: 12/5/1968
No Blue Skies
Singer Joey Rand turns to dramatic high-rise hotel break-ins in order to cover his gambling debts. His girlfriend Val has doubts about the scheme. Joey convinces her that a big record deal is on the way. According to him, the future is bright.
Season 1, Episode 11 – Aired: 12/12/1968
By the Numbers
On leave in Honolulu after a tour of duty in Vietnam, a naive young private finds his life falling apart. He wanders into the middle of a murderous power struggle among members of a criminal organization. Meanwhile, the governor pushes McGarrett to protect the soldiers that frequent the Hotel Street red-light district.
Season 1, Episode 12 – Aired: 12/19/1968
Yesterday Died And Tomorrow Won't Be Born
When McGarrett is shot by someone from his past, Danno takes command of Five-O. As he leads the investigation, Danno discovers that the shooter may be setting up another important man as his next victim.
Season 1, Episode 13 – Aired: 12/25/1968
The death of a friend, an assistant prosecuting attorney, leads McGarrett to turn one mobster against another. Harry Cardonus offers to testify against his boss, Joe Matsukino, after narrowly escaping a murder attempt. McGarrett only has to keep Cardonus alive for one more day, but Matsukino is determined to kill his former friend.
Season 1, Episode 14 – Aired: 1/1/1969
Pray Love Remember, Pray Love Remember
A young Indonesian female student is found murdered on the campus of the Pacific Cultural Institute. When a large footprint is discovered near the body, her very tall boyfriend becomes the obvious suspect. However, McGarrett isn't convinced that this is such an easy case.
Season 1, Episode 15 – Aired: 1/8/1969
King Of The Hill
Danno is shot in a hospital by a delusional soldier who thinks he is still fighting in Vietnam. McGarrett has to save Danno before he bleeds to death, but he can't risk a shootout with so many frail patients in the immediate vicinity.
Season 1, Episode 16 – Aired: 1/15/1969
After Danno fails to stop a woman from jumping to her death off a seaside cliff, the investigation leads to David Stone, a drug-promoting professor. Danno goes undercover to learn the details of the drug distribution network.
Season 1, Episode 17 – Aired: 1/22/1969
The Face of the Dragon
McGarrett must locate the source of an outbreak of bubonic plague on the Hawaiian islands.
Season 1, Episode 18 – Aired: 1/29/1969
McGarrett negotiates with a hostage-taking prisoner by offering himself as a hostage. Big Chicken longs to take revenge against McGarrett.
Season 1, Episode 19 – Aired: 2/5/1969
One For The Money
McGarrett receives a mysterious envelope and photo linked to the recent murder of a young woman. He suspects a serial killer may be targeting the employees of a local company.
Season 1, Episode 20 – Aired: 2/12/1969
Along Came Joey
When a promising young boxer is killed, his father, Maui policeman Phil Kalama, begins his own personal investigation. McGarrett worries that Kalama will throw away his career and his reputation in order to avenge his son's death.
Season 1, Episode 21 – Aired: 2/19/1969
Once Upon A Time, Part I
McGarrett's sister falls under the spell of a quack healer who claims to offer a cure for her child. McGarrett flies to Los Angeles to protect his sister Mary Ann, but his efforts to shut down the healer serve only to turn his sister against him.
Season 1, Episode 22 – Aired: 2/26/1969
Once Upon A Time, Part II
McGarrett searches for evidence to bring a murder case against Dr. Fremont. His sister continues to believe that McGarrett is persecuting a "saint."
Season 1, Episode 23 – Aired: 3/5/1969
Not That Much Different
After a student peace activist is shot and killed, McGarrett's investigation is hampered by a lack of cooperation and distrust from the other student activists.
Season 1, Episode 24 – Aired: 3/12/1969
Danno and Chin attempt to arrest an expert safecracker but Danno is forced to shoot him. McGarrett goes undercover as the safecracker Harry Brown to discover why he came to Hawaii. He learns of a plot organized by "The Man," a mysterious organizer who communicates only through audio recordings. A fellow conspirator, Margi Carstairs, may know more about the plan than she lets on.
Season 1, Episode 25 – Aired: 3/19/1969
The Big Kahuna
Sam Kalakua, a distant uncle of Kono, is being tormented by what he thinks is an apparition of Pele, the Hawaiian goddess of volcanoes and fire. The Governor makes a personal request of McGarrett to look into the case.
Season 2, Episode 1 – Aired: 9/24/1969
A Thousand Pardons -- You're Dead!
An army sergeant and a municipal worker run a scam in which they use local bar women to claim G.I. widow benefits. Sgt. Simms then kills the women, motivated by both the cash and his desire for revenge since his brother died after an encounter with a "gold-digging" prostitute. McGarrett and company must use other women in the bar to help them uncover the scheme.
Season 2, Episode 2 – Aired: 10/1/1969
To Hell with Babe Ruth
A Japanese World War II veteran, Yoshio Nagata, escapes from a mental hospital and tries to carry out his wartime orders to blow up a refinery.
Season 2, Episode 3 – Aired: 10/8/1969
Forty Feet High and It Kills!
A tsunami warning is called and a geneticist is evacuated from a conference. He is then kidnapped under the orders of Wo Fat, but he uses his diabetic medical condition as a ploy to stop Wo Fat from carrying out the plan to return him to China.
Season 2, Episode 4 – Aired: 10/15/1969
Just Lucky, I Guess
A middle-aged mainland hardware salesman escorts a young prostitute to her apartment, and then witnesses her murder by a mobster.
Season 2, Episode 5 – Aired: 10/22/1969
McGarrett must interrupt his Sunday to deal with both terrorists and politics when a revolutionary group steals guns from a barracks for their overseas cause.
Season 2, Episode 6 – Aired: 10/29/1969
A Bullet for McGarrett
A university professor is using hypnosis to program students into becoming assassins.
Season 2, Episode 7 – Aired: 11/5/1969
McGarrett must counter a plot by international terrorist Professor Erich Stoss to use a fungus to wipe out Hawaii's sugar cane industry, which is nearly half of the world's supply.
Season 2, Episode 8 – Aired: 11/12/1969
King Kamehameha Blues
Four university students hatch a plot to steal the priceless cloak of the Hawaiian King Kamehameha. McGarrett and the team investigate the group's bratty leader, Arnold Potter.
Season 2, Episode 9 – Aired: 11/19/1969
The Singapore File
McGarrett gets a phone call from Singapore and goes to rescue Nicole Wylie, a witness who has changed her mind and wants to testify. However, the
Season 2, Episode 10 – Aired: 11/26/1969
All the King's Horses
An assassination attempt on a prominent politician, Charles Irwin, leads Five-O to Mike Finney, a former racketeer who has been clean for nine years. Finney insists that he is innocent, and the trail of clues leads back to Irwin.
Season 2, Episode 11 – Aired: 12/3/1969
Leopard on the Rock
When a dictator's plane is diverted to Hawaii as part of a plan to kill him, McGarrett must deal with the complex politics of the situation and protect the hated leader.
Season 2, Episode 12 – Aired: 12/10/1969
The Devil and Mr. Frog
When a young son of a businessman escapes from his kidnappers "The Devil" and "Mr. Frog", Five-O must recover the $300,000 ransom money that the desperate father paid.
Season 2, Episode 13 – Aired: 12/17/1969
The Joker's Wild, Man, Wild
Two young men play an increasingly dangerous and deadly game for the attentions of a beautiful but spoiled heiress, who plays them off against each other.
Season 2, Episode 14 – Aired: 12/24/1969
Which Way Did They Go?
A career criminal fools McGarrett and the team into protecting the wrong bank.
Season 2, Episode 15 – Aired: 12/31/1969
McGarrett gets more than he bargained for when a birthday present explodes and blinds him. As the Five-O team searches for the would-be assassin, McGarrett tries to recuperate with the help of the tough Nurse Edith Lavallo (played by Marion Ross of "Happy Days").
Season 2, Episode 16 – Aired: 1/7/1970
Bored, She Hung Herself
Don Miles, a "health freak", uses a hanging-type exercise to promote his well-being. His girlfriend Wanda tries it and apparently dies in the attempt. McGarrett discovers that foul play may have been involved. NOTE-This episode is not available for television syndication packages due to the controversial content. A viewer reportedly imitated the hanging "exercise" and died.
Season 2, Episode 17 – Aired: 1/14/1970
Run, Johnny, Run
McGarrett refuses to accept that AWOL sailor John Mala shot a Navy MP without cause. Christopher Walken guest stars as the friend of the shooting victim.
Season 2, Episode 18 – Aired: 1/21/1970
A psychiatric worker is trying to drive a fellow Vietnam veteran crazy.
Season 2, Episode 19 – Aired: 1/28/1970
The One with the Gun
Peter Corman is murdered during a game of poker, and his brother Lorenzo arrives in Hawaii for revenge. McGarrett must work out what happened and prevent Lorenzo from carrying out his intentions.
Season 2, Episode 20 – Aired: 2/4/1970
Chin Ho is accused of bribery.
Season 2, Episode 21 – Aired: 2/11/1970
Most Likely to Murder
Police officer Lew Morgan and his wife are long-time friends of Danno. When she is murdered, Morgan sets out to find the culprit. He uncovers secrets that may have led to her death, putting a strain on his friendship with Danno.
Season 2, Episode 22 – Aired: 2/18/1970
A research scientist, Dr. Royce, is set up by revolutionaries to be transported away from the islands in a submarine. McGarrett must stop this from happening and also has to contend with the interference of federal agents in the case.
Season 2, Episode 23 – Aired: 2/25/1970
Three Dead Cows at Makapuu (1)
A biological scientist views his work as evil.
Season 2, Episode 24 – Aired: 3/4/1970
Three Dead Cows at Makapuu (2)
The deadly toxin is lost and McGarrett has to find the vial before it disintegrates and poisons the whole island.
Season 2, Episode 25 – Aired: 3/11/1970
Kiss the Queen Goodbye
A con artist blackmails a politician into taking her to an event where she can steal the priceless Queen of Polynesia emerald and swap it for a fake.
Season 3, Episode 1 – Aired: 9/16/1970
And a Time to Die
The daughter of a top neurosurgeon is kidnapped.
Season 3, Episode 2 – Aired: 9/23/1970
Trouble In Mind
Singer Eadie Jordan plans to make a comeback at a concert, but she is struggling with an addiction to heroin. McGarrett and Five-O learn that arsenic-laced heroin is being sold in the Oahu area.
Season 3, Episode 3 – Aired: 9/30/1970
The Second Shot
An opposition leader for Greece is living in exile in Hawaii.
Season 3, Episode 4 – Aired: 10/7/1970
Time and Memories
When a lawyer is murdered, his wife becomes the top suspect and McGarrett investigates. However, matters are complicated by the fact that the woman had a relationship with McGarrett, and he jeopardizes his job because of this.
Season 3, Episode 5 – Aired: 10/14/1970
The Guarnerius Caper
Shortly after giving a recital, the priceless Guarnerius violin of a visiting Russian virtuoso is stolen. McGarrett must retrieve it before the theft turns into an international incident.
Season 3, Episode 6 – Aired: 10/21/1970
Five-O's efforts to rescue a young boy from kidnappers go wrong when Kono is captured and beaten. An angry McGarrett must work out a way to rescue Kono without further endangering him.
Season 3, Episode 7 – Aired: 10/28/1970
Force Of Waves
A ruthless businessman dies in a boat explosion that nearly kills McGarrett too. Danno takes over the investigation as McGarrett recovers from his injuries.
Season 3, Episode 8 – Aired: 11/4/1970
Hatsuo Shigato, an executive for a Japanese computer research company, travels to Honolulu for business. He is recognized as a former commandant of a World War II prison camp by one of his former victims, Mitch Bradley. Bradley threatens Shigato, but he finds that Shigato may have more on his mind than just business in Hawaii.
Season 3, Episode 9 – Aired: 11/11/1970
The Late John Louisiana
Instead of killing the witness to a two-year-old murder, the hired hit man falls in love with her. McGarrett tries to find her before duty overtakes love.
Season 3, Episode 10 – Aired: 11/18/1970
The Last Eden
Five-O search for the criminals who set up Hawaiian singer and ecologist Jimmy Nuanu as the fall guy for a sewage plant bombing.
Season 3, Episode 11 – Aired: 11/25/1970
Over Fifty? Steal!
McGarrett and company must match wits against a veteran thief and robber who leaves Monopoly money at the scene of his crimes.
Season 3, Episode 12 – Aired: 12/2/1970
Dan Williams' fiancee is murdered by a strangler who writes poetry in lipstick on his victims' legs. Danno resolves to catch the culprit who has other murderous plans to carry out.
Season 3, Episode 13 – Aired: 12/9/1970
McGarrett must apprehend two criminals who are on the run with the proceeds of a six-year-old kidnapping and murder. The criminals are also pursued by their former partners in crime.
Season 3, Episode 14 – Aired: 12/16/1970
The Double Wall
When Harry Kellem hears a dying man confess to the murder for which Kellem was convicted, he takes a doctor hostage. McGarrett acts as negotiator in the tense situation.
Season 3, Episode 15 – Aired: 12/30/1970
Maui cowboy Frank Kuakua unintentionally kills the crooked real estate agent who had been eyeing his land. McGarrett leads a posse into the mountains after Kuakua. Danno joins the search by helicopter.
Season 3, Episode 16 – Aired: 1/6/1971
Ten Thousand Diamonds and a Heart
Electronics genius Sheldon Orwell is helped out of prison so he can mastermind a massive robbery of diamonds from the Honolulu Diamond Exchange.
Season 3, Episode 17 – Aired: 1/13/1971
To Kill or Be Killed
Vietnam war hero Jack Rigney falls to his death from an apartment balcony. His father is a brigadier general and a World War II veteran. His brother Michael plans to flee to Canada to avoid the draft. Danno poses as a potential draft dodger to help uncover the truth about Jack Rigney.
Season 3, Episode 18 – Aired: 1/27/1971
F.O.B. Honolulu (1)
Wo Fat and other top international agents converge on Hawaii to place bids on printing plates for $20 bills, which are in the possession of McGarrett's former Navy friend.
Season 3, Episode 19 – Aired: 2/3/1971
F.O.B. Honolulu (2)
McGarrett and Five-O encounter treason, murder and double-crosses as they work to prevent the U.S. from being flooded with fake currency.
Season 3, Episode 20 – Aired: 2/10/1971
The wife of an arms dealer is kidnapped by revolutionaries who want the guns diverted from their original destination.
Season 3, Episode 21 – Aired: 2/17/1971
The wife of a convicted man fakes evidence in a new crime so that McGarrett will have to re-open her husband's case.
Season 3, Episode 22 – Aired: 2/24/1971
The Bomber and Mrs. Moroney
Danno's past comes back to haunt him when the vengeful brother of a young boy he shot is released from prison. The brother takes Chin Ho, Jenny and others hostage in McGarrett's office and threatens to blow them up. Danno must resolve the tense situation.
Season 3, Episode 23 – Aired: 3/3/1971
The Grandstand Play (1)
Lon Phillips leaves his baseball career behind to bring his developmentally challenged son to Hawaii in order to escape death threats on the mainland.
Season 3, Episode 24 – Aired: 3/10/1971
The Grandstand Play (2)
The son of the baseball player becomes the vital witness in a murder, but he is reluctant to tell either his father or Five-O about the crime.
Season 4, Episode 1 – Aired: 9/14/1971
Highest Castle, Deepest Grave
A ten-year-old case is reopened when an archaeological dig unearths the skeletons of two murder victims. Herbert Lom guest stars as the philanthropic businessman Mondrago.
Season 4, Episode 2 – Aired: 9/21/1971
No Bottles...No Cans...No People
Gangster Johnny Oporta arranges for his enemies to be murdered and then covers up the crimes by incinerating their bodies.
Season 4, Episode 3 – Aired: 9/28/1971
Wednesday, Ladies Free
Vic Tanaka is murdering women and painting their faces to resemble a former prostitute, who is now happily married.
Season 4, Episode 4 – Aired: 10/5/1971
3,000 Crooked Miles To Honolulu
Five-O is up against a sophisticated gang who have come to Hawaii to cash $750,000 in traveler's checks.
Season 4, Episode 5 – Aired: 10/12/1971
Two Doves and Mr. Heron
"Hippie freak" Ryan Moore robs an embezzler of the key to a locker containing $250,000. Danno tries to locate the girlfriend, the daughter of Moore's landlady when he was studying at Berkeley.
Season 4, Episode 6 – Aired: 10/19/1971
...And I Want Some Candy and a Gun That Shoots
Young Vietnam veteran and marksman Billy Shem Jr. buys a rifle under false pretences and proceeds to a bunker at Diamond Head. He takes pot shots at people on the road and then at the police who arrive.
Season 4, Episode 7 – Aired: 10/26/1971
Air Cargo -- Dial for Murder
While investigating the death of a security agent at an airport, McGarrett comes into contact with a gang who steals air cargo to sell on the black market.
Season 4, Episode 8 – Aired: 11/2/1971
For a Million... Why Not?
Five seemingly good citizens with different motives band together to steal $6,000,000 while McGarrett is away on the "Big Island" of Hawaii at a trial.
Season 4, Episode 9 – Aired: 11/9/1971
The Burning Ice
When a terminally ill man confesses to the killing and robbery of a wealthy woman, McGarrett's suspicions center on her husband.
Season 4, Episode 10 – Aired: 11/16/1971
Rest In Peace, Somebody
A policeman who was kicked off the force blames McGarrett and Five-O, and plans to kill the Governor.
Season 4, Episode 11 – Aired: 11/23/1971
A Matter of Mutual Concern
McGarrett must deal with the conflicts among four gangs of differing ethnic background, and try to uncover illegal activities.
Season 4, Episode 12 – Aired: 11/30/1971
Nine, Ten -- You're Dead
A mob boss seeks revenge on a former boxer who smashed the hand of a novice to prevent him from ending up ruining his life in the boxing ring.
Season 4, Episode 13 – Aired: 12/14/1971
Is This Any Way to Run a Paradise?
McGarrett and the team must find out who is behind a series of ecological stunts, when it is feared that a company executive will be their next target.
Season 4, Episode 14 – Aired: 12/28/1971
Odd Man In
A veteran criminal who has already had dealings with Five-O escapes, and plans to steal millions of dollars from drug smugglers.
Season 4, Episode 15 – Aired: 1/4/1972
Bait Once, Bait Twice
A woman attempts suicide in order to get her boyfriend to come out into the open and expose himself to an assassination attempt.
Season 4, Episode 16 – Aired: 1/11/1972
The Ninety-Second War (1)
McGarrett is framed in an elaborate set up by Wo Fat, and has to contend with a foreign double amongst other problems.
Season 4, Episode 17 – Aired: 1/18/1972
The Ninety-Second War (2)
Several faces from the past reappear as McGarrett must stop Wo Fat from carrying out his plan, a ninety-second attack on a missile-tracking base.
Season 4, Episode 18 – Aired: 1/25/1972
Season 4, Episode 19 – Aired: 2/1/1972
While You're at It, Bring in the Moon
An eccentric billionaire is accused of murdering a business associate, but will not leave his boat to defend himself against the accusations, allowing his associates to declare him mentally incompetent.
Season 4, Episode 20 – Aired: 2/8/1972
Cloth of Gold
Three real estate crooks die horrible and mysterious shellfish related deaths, and McGarrett and the others must establish the link between them, and who has reason to want them dead.
Season 4, Episode 21 – Aired: 2/15/1972
Good Night, Baby - Time to Die!
McGarrett sets up a cordon of police around a young woman to capture her boyfriend who has escaped from jail, but all is not as it seems…
Season 4, Episode 22 – Aired: 2/22/1972
Didn't We Meet at a Murder?
A young widow becomes part of a blackmail plot involving the murder of a Chicago mobster.
Season 4, Episode 23 – Aired: 2/29/1972
Follow the White Brick Road
Danno goes undercover onboard a Navy ship to try and uncover how sailors are smuggling heroin onto the islands.
Season 4, Episode 24 – Aired: 3/7/1972
A psychotic man named Ralston is killing the wives of members of his army unit, and Five-O, including Kono on his last case, must stop him before he commits any more crazed attacks.
Season 5, Episode 1 – Aired: 9/12/1972
Death is a Company Policy
A local thug, Piro Manoa, is trying to create the impression of corruption in the Five-O force, and Duke is implicated in a murder. McGarrett and the team, with new recruit Ben Kokua, must save Duke's position and work out the plot of the organisation behind the false accusations.
Season 5, Episode 2 – Aired: 9/19/1972
Death Wish on Tantalus Mountain
When two of an egotistical racing driver's support staff are murdered, suspicions of sabotage fall upon his attractive girlfriend.
Season 5, Episode 3 – Aired: 9/26/1972
You Don't Have To Kill To Get Rich -- But It Helps.
A private investigator, Sam Tolliver, arrives from Texas to help an old friend who is being blackmailed and is at risk of being killed if he doesn't pay up, but he ends up wanting to become part of the blackmail operation.
Season 5, Episode 4 – Aired: 10/3/1972
Pig in a Blanket
Danno shoots an apparently armed teenager but finds that he was mistaken, and public opinion and the teen's brother turn against him. McGarrett must act to defuse the potentially explosive situation.
Season 5, Episode 5 – Aired: 10/10/1972
The Jinn Who Clears The Way
Wo Fat is suspected of being behind the theft of a mobile ICBM device, and McGarrett with other top officials must stop him selling it off to the highest bidder.
Season 5, Episode 6 – Aired: 10/17/1972
Fools Die Twice
Army computer technician Jack Gulley kidnaps a scientist and then uses a planned heist by three accomplices on a military base to divert Five-O's attention from his sale of the scientist to the highest bidder.
Season 5, Episode 7 – Aired: 10/24/1972
Chain of Events
A doctor tracking venereal disease is murdered, and Five-O must track the series of encounters to find out who is a carrier. Their investigation is made doubly important by the murder of a young woman who is close to a upcoming politician. He seems a likely suspect but McGarrett suspects a deeper plot.
Season 5, Episode 8 – Aired: 10/31/1972
Journey out of Limbo
Danno is found in the back of a truck, dazed and confused, and McGarrett and the others must help him piece together how he came to be in that situation.
Season 5, Episode 9 – Aired: 11/14/1972
'V' For Vashon: The Son (1)
McGarrett becomes involved with the Vashon mafioso family after the youngest member, Chris, is implicated in a daring raid on a hotel.
Season 5, Episode 10 – Aired: 11/21/1972
'V' For Vashon: The Father (2)
McGarrett must contend with Honore Vashon, who wants revenge for his son's death.
Season 5, Episode 11 – Aired: 11/28/1972
'V' For Vashon: The Patriarch (3)
Dominick Vashon, the patriarch of the clan, makes his attempt to bring down McGarrett and Five-O.
Season 5, Episode 12 – Aired: 12/5/1972
The Clock Struck Twelve
When McGarrett arrests a group of vigilante nationalists, hidden bombs at the courthouse threaten to destabilize the islands.
Season 5, Episode 13 – Aired: 12/19/1972
I'm A Family Crook -- Don't Shoot!
A husband and wife team of scam merchants get caught between some of Hawaii's most powerful mobs.
Season 5, Episode 14 – Aired: 1/2/1973
The Child Stealers
Two drifters, Gar and Nina, steal children and sell them on to a mainland adoption agency in order to raise the cash to buy a boat and go cruising.
Season 5, Episode 15 – Aired: 1/9/1973
Thanks For The Honeymoon
McGarrett agrees to let Toni, a tough female convict, get married and have a honeymoon in protective custody as long as she will testify against a local hood.
Season 5, Episode 16 – Aired: 1/16/1973
A crazed electronics wizard threatens the lives of a psychiatrist and his patients by using electronic devices and gadgets.
Season 5, Episode 17 – Aired: 1/23/1973
Here Today, Gone Tonight
Five-O has a suspect for a murder, but they have one problem. How can the suspect have been in two places at the same time?
Season 5, Episode 18 – Aired: 1/30/1973
The Odd Lot Caper
A senior partner in a stock exchange firm comes up with a foolproof plan to rob the Honolulu Stock Exchange.
Season 5, Episode 19 – Aired: 2/6/1973
Will The Real Mr. Winkler Please Die?
McGarrett and company must break through a tissue of lies in order to protect a Russian defector from being killed.
Season 5, Episode 20 – Aired: 2/13/1973
Little Girl Blue
Two simple criminals kidnap a young girl, and hide out in a bunker at Diamond Head. McGarrett must unravel the reason why they are there and get the girl safely away from them.
Season 5, Episode 21 – Aired: 2/20/1973
A travel agent who operates gambling trips is killed in order to send a warning to others that the syndicates will not tolerate competition.
Season 5, Episode 22 – Aired: 2/27/1973
Engaged To Be Buried
Chin Ho must face the fact that his daughter, Alia, is in love with the son of a local criminal under investigation, and that she plans to get married to him.
Season 5, Episode 23 – Aired: 3/6/1973
The Diamond That Nobody Stole
A burglary at the home of a well known island family sets off a series of events that ends in murder.
Season 5, Episode 24 – Aired: 3/13/1973
Jury of One
A single person is holding out in a Five-O trial. McGarrett and the team have to find out who is stalling and why they are doing it.
Season 6, Episode 1 – Aired: 9/11/1973
A amputee with no hands sets out to kill every police officer who contributed to his injury, and that includes Steve McGarrett.
Season 6, Episode 2 – Aired: 9/18/1973
Draw Me a Killer
Random murders are being committed every six weeks. McGarrett struggles to understand the motives behind these crimes. A newspaper may hold the answer.
Season 6, Episode 3 – Aired: 9/25/1973
Charter for Death
When a large amount of diseased rats are found on a boat with all the crew dead, Five-O must contend with an outbreak of bubonic plague.
Season 6, Episode 4 – Aired: 10/2/1973
One Big Happy Family
A murderous family makes their way to Hawaii after leaving behind a trail of devastation on the mainland.
Season 6, Episode 5 – Aired: 10/9/1973
The Sunday Torch
Buildings are being set on fire on Sundays, and a known firebug is the top suspect. However, McGarrett begins to think that others may be responsible.
Season 6, Episode 6 – Aired: 10/16/1973
Murder is a Taxing Affair
A corrupt federal agent who is tracking a man under indictment for tax evasion kills him for the $600,000 he is carrying, and then loses the money.
Season 6, Episode 7 – Aired: 10/23/1973
Tricks are Not Treats
The killing of an important pimp threatens an all out war between two competing vice empires.
Season 6, Episode 8 – Aired: 10/30/1973
Why Wait Till Uncle Kevin Dies?
A string of five murders of wealthy men leads McGarrett to a crooked inheritance scheme.
Season 6, Episode 9 – Aired: 11/6/1973
Flash of Color, Flash of Death
A glamorous woman sets up an opal smuggler so her accomplices can rob both the smuggler and a jewelery store at the same time.
Season 6, Episode 10 – Aired: 11/13/1973
A Bullet for El Diablo
A dictator must evade a female assassin sent to kill him, one that looks just like his own daughter.
Season 6, Episode 11 – Aired: 11/20/1973
The Finishing Touch
McGarrett brings in a document expert to help him crack a case involving forged government securities, but he soon becomes suspicious of the expert as well…
Season 6, Episode 12 – Aired: 11/27/1973
Anybody Can Build a Bomb
A nuclear scientist becomes involved in an extortion plot when a gang threatens to set off a small nuclear weapon in Honolulu.
Season 6, Episode 13 – Aired: 12/4/1973
Try to Die on Time
Harry Foxton, a gambler, is himself the subject of huge bets over what hour he will die. McGarrett must work out the gambler's complex relationships to get to the bottom of this case.
Season 6, Episode 14 – Aired: 12/11/1973
The $100,000 Nickel
A thief known for using sleight-of-hand is hired to steal a valuable nickel, but the coin ends up on a journey across many miles and through many hands.
Season 6, Episode 15 – Aired: 12/18/1973
The Flip Side is Death
A mock military emergency leaves a bank open for a robbery, and Five-O must travel to the opposite side of Oahu to find out more in their investigation.
Season 6, Episode 16 – Aired: 1/1/1974
The Banzai Pipeline
An exciting surf beach is the location for a filming session, where a man catches a killer on camera.
Season 6, Episode 17 – Aired: 1/8/1974
One Born Every Minute
A pair of crooks, teaming up with local criminals, uses phony diamonds as bait to prey on wealthy male tourists.
Season 6, Episode 18 – Aired: 1/15/1974
A young man witnesses a murder, and finds himself and his family are now the killer's targets.
Season 6, Episode 19 – Aired: 1/22/1974
Death with Father
The son of a Federal Narcotics officer becomes involved in a heroin refining operation.
Season 6, Episode 20 – Aired: 1/29/1974
Murder with a Golden Touch
When a man is found dead with gold dust on him, McGarrett and his team must investigate where the stolen gold came from and how it is being bought onto the market.
Season 6, Episode 21 – Aired: 2/5/1974
Nightmare in Blue
A series of rapes and murders occur, and the main suspect seems to be a police officer...
Season 6, Episode 22 – Aired: 2/12/1974
Mother's Deadly Helper
A right-wing crackpot, Cord McKenzie, metes out ‘justice' to people who have been found innocent on technicalities or released early. He thinks he is helping the police, but McGarrett thinks otherwise.
Season 6, Episode 23 – Aired: 2/19/1974
Killer at Sea
While investigating a robbery and kidnapping, the trail of clues leads McGarrett and the team to an ocean liner with a deadly passenger.
Season 6, Episode 24 – Aired: 2/26/1974
30,000 Rooms and I Have the Key
An aging jewel thief steals from rooms at Waikiki hotels, and taunts Five-O by leaving a trail of clues behind.
Season 7, Episode 1 – Aired: 9/10/1974
The Young Assassins
Danno and a college professor are kidnapped by a revolutionary group of young radicals led by a hardened criminal.
Season 7, Episode 2 – Aired: 9/17/1974
A Hawaiian Nightmare
A geophysics expert, Bernard Brown, is heavily in debt, so he comes up with a plan to cause an explosion in the Hawaii Volcanoes National Park, which will cause lava to pour all down the hillside and into the city of Hilo, unless the Governor comes up with half a million dollars as a ransom.
Season 7, Episode 3 – Aired: 9/24/1974
I'll Kill 'Em Again
Eddie Josephs is a paranoid schizophrenic who is carrying out murders based on old Five-O cases. McGarrett must follow his clues and catch him before more people die.
Season 7, Episode 4 – Aired: 10/1/1974
Steal Now -- Pay Later
A sophisticated thief is selling his goods to legitimate businessmen, and Five-O must find a way of trapping him.
Season 7, Episode 5 – Aired: 10/8/1974
Bomb, Bomb, Who's Got the Bomb?
Senator Harlan Henderson suffers from multiple personalities, and one side of him wants to kill himself. However, he ends up blowing up his secretary, and McGarrett uses handwriting and a diagnosis from a psychiatrist to try to crack the case.
Season 7, Episode 6 – Aired: 10/15/1974
Right Grave, Wrong Body
A criminal, Hobart, is robbing liquor stores using a policeman's former gun, but the officer wants it back as he used it to kill a bankrobber five years before and the body has been uncovered.
Season 7, Episode 7 – Aired: 10/22/1974
We Hang Our Own
When his son is beaten to death, a powerful cattle baron takes matters into his own hands, and McGarrett and Five-O must prevent the rule of law from breaking down.
Season 7, Episode 8 – Aired: 10/29/1974
The Two-Faced Corpse
A gangland execution investigation takes a turn for the peculiar when it is found that the victim had two identities.
Season 7, Episode 9 – Aired: 11/12/1974
How to Steal a Masterpiece
Five-O must investigate why three infallible security systems are failing to prevent the theft of priceless artworks.
Season 7, Episode 10 – Aired: 11/26/1974
A Gun for McGarrett
After an attempt is made on Steve McGarrett's life, he is drawn towards a female art dealer, but she too may not be good for his health…
Season 7, Episode 11 – Aired: 12/3/1974
Welcome to Our Branch Office
Two con men use a gang of Five-O lookalikes and doubles to extort money from Honolulu businessmen.
Season 7, Episode 12 – Aired: 12/10/1974
Presenting... in the Center Ring... Murder
Wo Fat returns to Hawaii in order to carry out the assassination of a Chinese diplomat, whom he considers to be a foolish peace-maker.
Season 7, Episode 13 – Aired: 12/31/1974
McGarrett and Five-O need to find out why a Japanese banker ritually killed himself and catch a true criminal into the bargain.
Season 7, Episode 14 – Aired: 1/7/1975
Bones of Contention
A Honolulu murder is mysteriously linked to a human fossil smuggled out of China in the Second World War.
Season 7, Episode 15 – Aired: 1/14/1975
An investigation into a murder is sent off track through the modification of computer information, and Five-O must use the latest technology to rescue the case.
Season 7, Episode 16 – Aired: 1/21/1975
A Woman's Work is With a Gun
Three women desperately in need of money take to armed robbery of tourist buses as a way to raise some quick cash.
Season 7, Episode 17 – Aired: 1/28/1975
Small Witness, Large Crime
When a young boy is arrested as a witness to a murder, McGarrett must contend with a fiery deputy public prosecutor.
Season 7, Episode 18 – Aired: 2/4/1975
Ring of Life
A million dollar reward for the return of five figurines sparks off a trail of murder and theft that leads to Hawaii.
Season 7, Episode 19 – Aired: 2/11/1975
Study in Rage
When a psychotic man kills his doctor, Five-O must use a unfinished painting to gather clues to his whereabouts.
Season 7, Episode 20 – Aired: 2/18/1975
And the Horse Jumped over the Moon
An elaborate sea and air scheme for heroin smuggling goes unnoticed until one of the gang tries to sell out their plan for a fix of heroin.
Season 7, Episode 21 – Aired: 2/25/1975
Hit Gun for Sale
McGarrett must prevent a mob war by tracking down an unknown hitman and his intended target.
Season 7, Episode 22 – Aired: 3/11/1975
When a deranged ex-Army officer shoots a policeman and takes a young girl hostage, McGarrett disagrees with a police captain over the best way to free her.
Season 7, Episode 23 – Aired: 3/18/1975
Diary of a Gun
A Saturday Night Special passes from person to person and causes Five-O trouble and others misery.
Season 7, Episode 24 – Aired: 3/25/1975
6,000 Deadly Tickets
Five-O works with a air traffic investigator in order to put a stop to illegal ticket sales which have already cost several lives.
Season 8, Episode 1 – Aired: 9/12/1975
Murder: Eyes Only (Part 1)
When a letter bomb kills a Naval Officer whilst McGarrett is on Navy Duty, he is called upon to investigate and uncovers a plot involving an old nemesis.
Season 8, Episode 2 – Aired: 9/12/1975
Murder: Eyes Only (Part 2)
McGarrett must try his utmost to foil Wo Fat's plans which include hostages and brainwashing.
Season 8, Episode 3 – Aired: 9/19/1975
McGarrett is Missing
McGarrett must again face mobster Charlie Bombay when a plane carrying them to Honolulu crashes in the forests.
Season 8, Episode 4 – Aired: 9/26/1975
Termination with Extreme Prejudice
A British agent, Harry Wells, arrives in Hawaii in pursuit of a turncoat, but not all is what it seems for Five-O...
Season 8, Episode 5 – Aired: 10/3/1975
Target? The Lady
Five-O must find a female courier who witnessed a murder before a hitman can...
Season 8, Episode 6 – Aired: 10/10/1975
Death's Name is Sam
A road accident starts the trail towards a plot to use SAM missiles to bring down a VIP jet plane.
Season 8, Episode 7 – Aired: 10/17/1975
The Case Against McGarrett
McGarrett offers himself as a hostage exchange, but is then put on 'trial' by Honore Vashon.
Season 8, Episode 8 – Aired: 10/24/1975
McGarrett meets his match in Dr. Grant Ormsbee, a grumpy and aggravating scientist who is sheltering a suspected Chinese defector.
Season 8, Episode 9 – Aired: 10/31/1975
Sing A Song Of Suspense
When a singer witnesses a murder committed by a racketeer, Five-O has to protect her until she can give evidence, but this is not an easy job...
Season 8, Episode 10 – Aired: 11/7/1975
Retire In Sunny Hawaii -- Forever
Danno's Aunt Clara becomes acquainted with a man on the plane to Honolulu, but becomes concerned about him afterwards. Dan, Steve and the others ignore her at first, but then the man turns up dead...
Season 8, Episode 11 – Aired: 11/14/1975
How to Steal a Submarine
A vice-principal enlists the help of his students and a submarine to smuggle drugs.
Season 8, Episode 12 – Aired: 11/21/1975
The Waterfront Steal
When Five-O fail to prevent a series of thefts at dockside warehouses, an influential owner creates trouble for McGarrett.
Season 8, Episode 13 – Aired: 11/28/1975
Honor is an Unmarked Grave
A writer who specialises in solving mysteries uncovers the body in a seven year old case, but it raises more questions than it answers...
Season 8, Episode 14 – Aired: 12/4/1975
A Touch of Guilt
Three young men gang rape a waitress after a night of drinking. One of the men is the son of a U.S. senator and the crime is covered up. Or so they think.
Season 8, Episode 15 – Aired: 12/11/1975
Wooden Model of a Rat
Whilst trying to stop the smuggling of small Oriental animal statues, McGarrett is caught illegally in possession of one of them as part of his personal collection.
Season 8, Episode 16 – Aired: 12/18/1975
A disturbed young man steals nerve gas to use against a visiting royal family as revenge for the death of his father.
Season 8, Episode 17 – Aired: 1/1/1976
Legacy of Terror
When an elderly importer who was a World War II Japanese spy is killed, Five-O seeks his killer.
Season 8, Episode 18 – Aired: 1/8/1976
Loose Ends Get Hit
A clear cut murder case against an island mobster is derailed due to McGarrett.
Season 8, Episode 19 – Aired: 1/15/1976
Anatomy of a Bribe
A crooked contractor and a buildings inspector are under suspicion after the new Global Trade Center in Honolulu goes up in flames.
Season 8, Episode 20 – Aired: 1/29/1976
Turkey Shoot at Makapuu
When an airline stewardess and a hang-gliding instructor are murdered, Five-O must find the killers.
Season 8, Episode 21 – Aired: 2/5/1976
A Killer Grows Wings
Criminals threaten to use a special type of moth to wipe out the sugar cane on Hawaii and destroy the industry.
Season 8, Episode 22 – Aired: 2/12/1976
The Capsule Kidnapping
The son of a Japanese businessman is kidnapped and held in a capsule underwater until a $1.5 million dollar ransom is paid...
Season 8, Episode 23 – Aired: 2/26/1976
Love Thy Neighbor -- Take His Wife
Ben Tanaka, a well-known ecologist, seems to be behind the kidnapping of a wealthy land developer's wife, but all is not as it seems and a conspiracy gradually reveals itself.
Season 8, Episode 24 – Aired: 3/4/1976
A Sentence to Steal
McGarrett sends an undercover agent into a rehabilitation home for juvenile offenders to find out who is behind the theft of gold from dental supply warehouses.
Season 9, Episode 1 – Aired: 9/30/1976
Nine Dragons (Part 1)
When Wo Fat steals toxins in an attempt to take out the leaders of Communist China, McGarrett must track him to Hong Kong.
Season 9, Episode 2 – Aired: 9/30/1976
Nine Dragons (Part 2)
In Hong Kong, Steve is caught by Wo Fat and mentally and physically tortured by being 'reconditioned'. He must beat these problems to save the day again.
Season 9, Episode 3 – Aired: 10/7/1976
Assault on the Palace
McGarrett must solve a daring bank robbery committed during the King Kamehameha Day Parade under the cover of a historic re-enactment.
Season 9, Episode 4 – Aired: 10/14/1976
Oldest Profession -- Latest Price
The murder of island prostitutes appears to be linked to an extortion racketeer who is determined to make a return.
Season 9, Episode 5 – Aired: 10/21/1976
Man on Fire
Five bodies are found in the crater of Mauna Loa contaminated by radiation from illegal plutonium, and Five-O must find and confiscate this deadly toxin.
Season 9, Episode 6 – Aired: 10/28/1976
Tour de Force, Killer Aboard
Two seemingly unconnected deaths lead McGarrett into a desperate race to prevent the assassination of a visiting Sheikh.
Season 9, Episode 7 – Aired: 11/4/1976
The Last of the Great Paperhangers
A masterful forger who McGarrett once testified against arrives in Hawaii and plans a massive robbery of US Navy funds.
Season 9, Episode 8 – Aired: 11/11/1976
Heads, You're Dead
When yacht racers are found dead on their craft, Five-O launches a desperate search for high-seas buccaneers.
Season 9, Episode 9 – Aired: 11/18/1976
Let Death Do Us Part
A escaped convict may well have a strong case of innocence, when Five-O become involved in the paranormal...
Season 9, Episode 10 – Aired: 12/2/1976
A press photographer is pursued relentlessly after she takes a photo of a supposedly dead gangster who has returned to the islands to take control of the local syndicate.
Season 9, Episode 11 – Aired: 12/16/1976
Yes, My Deadly Daughter
When $10 million goes missing from a crimelord, the culprit seems to be dangerously close to home...
Season 9, Episode 12 – Aired: 12/23/1976
Target -- A Cop
Police are being lured into traps and shot, and Five-O have difficulty nailing a suspect when their primary lead turns out to be a paraplegic.
Season 9, Episode 13 – Aired: 1/6/1977
The Bells Toll at Noon
The boyfriend of an overdose victim re-enacts famous film murders in a revenge on all the people he sees as responsible.
Season 9, Episode 14 – Aired: 1/13/1977
Man in a Steel Frame
McGarrett is the top suspect in the murder of his girlfriend, and the evidence against him is seemingly overwhelming...
Season 9, Episode 15 – Aired: 1/20/1977
Five-O must work with a Japanese officer to find the source of handguns that are flooding the black market in Tokyo.
Season 9, Episode 16 – Aired: 1/27/1977
Elegy in a Rain Forest
The daughter of Attorney General John Manicote is kidnapped by a deranged rapist and murderer, and Steve must not only contend with the criminal but Manicote's emotional state as well...
Season 9, Episode 17 – Aired: 2/3/1977
Dealer's Choice -- Blackmail
A hit and run incident leads Five-O to a gambling syndicate and Officer Welles's brother.
Season 9, Episode 18 – Aired: 2/17/1977
A Capitol Crime
A pensioner threatens to blow himself and his hostages up if he doesn't stop the demolition of his home.
Season 9, Episode 19 – Aired: 2/24/1977
To Die In Paradise
A lady singer is kidnapped and it looks as if her and her captors have died at sea...
Season 9, Episode 20 – Aired: 3/3/1977
Blood Money is Hard to Wash
A gangster attempts to buy an interest in a football club so that he can launder money through it.
Season 9, Episode 21 – Aired: 3/17/1977
To Kill a Mind
While searching for parts from a sunken Soviet submarine, McGarrett become suspicious about the particular parts that are being recovered.
Season 9, Episode 22 – Aired: 3/24/1977
Requiem for a Saddle Bronc Rider
A missing rodeo cowboy and the murder of a young couple pose a puzzling mystery for Five-O.
Season 9, Episode 23 – Aired: 3/31/1977
See How She Runs
The daughter of an L.A. detective and friend of McGarrett is framed for murder and then joins a cult.
Season 9, Episode 24 – Aired: 5/5/1977
Practical Jokes Can Kill You
A gang of thieves steal army rifles by peculiar means - hang-gliding into the armoury!
Season 10, Episode 1 – Aired: 9/15/1977
Up the Rebels
An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
Season 10, Episode 2 – Aired: 9/22/1977
You Don't See Many Pirates These Days
When a sea freighter is hijacked, the wealthy millionaire owner calls in Five-O, but the situation is not what it seems...
Season 10, Episode 3 – Aired: 9/29/1977
The Cop on the Cover
McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analyzing his every move.
Season 10, Episode 4 – Aired: 10/13/1977
The Friends of Joey Kalima
McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
Season 10, Episode 5 – Aired: 10/20/1977
The Descent of the Torches
Five-O must find out whether the death of an archaeologist is linked to his supposed desecration of tomb of King Kamehameha.
Season 10, Episode 6 – Aired: 10/27/1977
The Ninth Step
The return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armored truck robbers.
Season 10, Episode 7 – Aired: 11/10/1977
Shake Hands with the Man on the Moon
McGarrett must deal with an astronaut turned real-estate salesman in order to crack the case of a murdered reporter.
Season 10, Episode 8 – Aired: 11/17/1977
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
Season 10, Episode 9 – Aired: 12/8/1977
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
Season 10, Episode 10 – Aired: 12/22/1977
A gang of university students plan a hoax tidal wave in order to steal priceless jewelery.
Season 10, Episode 11 – Aired: 12/29/1977
East Wind -- Ill Wind
When an Asian ex-leader dies in a seemingly accidental swimming incident, his wife is convinced that he was murdered by forces from their home country.
Season 10, Episode 12 – Aired: 1/5/1978
Tread the King's Shadow
McGarrett becomes involved in a love triangle between a young local man, a rich girl and her father who hates the Hawaiian origins of the boy.
Season 10, Episode 13 – Aired: 1/12/1978
The Big Aloha
A young doctor is suspected of having been involved in the murder of his mentor.
Season 10, Episode 14 – Aired: 2/2/1978
A Short Walk on the Longshore
In order to find out the identity of the murderer of a union leader, McGarrett goes undercover as a longshoreman.
Season 10, Episode 15 – Aired: 2/9/1978
The Silk Trap
An up-and-coming young politician is blackmailed in order to affect his leadership of a congressional investigation.
Season 10, Episode 16 – Aired: 2/16/1978
Head to Head
While pursuing a drug dealer, McGarrett also has to contend with a federal agent.
Season 10, Episode 17 – Aired: 3/2/1978
Tall on the Wave
Danno must deal with a surfer, one of his friends, who is suspected in the murder of a woman.
Season 10, Episode 18 – Aired: 3/9/1978
Angel in Blue
A female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case.
Season 10, Episode 19 – Aired: 3/16/1978
When Does a War End?
A Japanese businessman comes under attack from a young man whose father suffered in an Japanese wartime prison camp.
Season 10, Episode 20 – Aired: 3/23/1978
Invitation to Murder
McGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive.
Season 10, Episode 21 – Aired: 3/30/1978
A cryogenics institute comes under suspicion when an investigative writer becomes involved.
Season 10, Episode 22 – Aired: 4/13/1978
My Friend, the Enemy
Five-O must deal with the kidnapping of an Arab princess. Steve McGarrett must also deal with an Italian female journalist's constant interruptions.
Season 10, Episode 23 – Aired: 4/27/1978
A Stranger in His Grave
Five-O become involved in a complex case of body-switching, mystery investments and suitcases full of money.
Season 10, Episode 24 – Aired: 5/4/1978
A Death in the Family
Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.
Season 11, Episode 1 – Aired: 9/28/1978
After a government agent is murdered, McGarrett must identify the traitor in a scientific facility.
Season 11, Episode 2 – Aired: 10/5/1978
Horoscope for Murder
When an astrologer visits McGarrett to inform him of a murderer with a terrible temper, his antagonism lessens when her assumptions seem to be partly true.
Season 11, Episode 3 – Aired: 10/12/1978
While McGarrett follows a false lead, an undercover Danno is discovered and brainwashed to carry out the assassination of Steve.
Season 11, Episode 4 – Aired: 10/19/1978
The Case Against Philip Christie
McGarrett is the lone hold-out in a trial where the guilt of the accused seems certain.
Season 11, Episode 5 – Aired: 10/26/1978
Steve is framed on the orders of a gambling syndicate, and becomes involved with a woman who is part of the case.
Season 11, Episode 6 – Aired: 11/9/1978
A Distant Thunder
Five-O must thwart the plans of a Neo-Nazi organization to kill Bobby Tamara, the "Hawaiian Kennedy."
Season 11, Episode 7 – Aired: 11/16/1978
When a street robber claims that he stole King Tutankhamen's mask for fun, McGarrett suspects there is more to the case than simple robbery.
Season 11, Episode 8 – Aired: 11/23/1978
The Pagoda Factor
McGarrett assists a convict in his escape so that he can return to his gang and provide Five-O with inside information.
Season 11, Episode 9 – Aired: 11/30/1978
A Long Time Ago
Danno is surprised when he bumps into a former flame and even more concerned when she seems to be involved in criminal activities.
Season 11, Episode 10 – Aired: 12/14/1978
Why Won't Linda Die?
The death of a prominent politician reveals a strange love triangle.
Season 11, Episode 11 – Aired: 12/21/1978
The Miracle Man
When a preacher is attacked by a man convinced that he is responsible for his wife's death, Five-O investigate more closely and discover some less than godly motives.
Season 11, Episode 12 – Aired: 12/28/1978
Number One With A Bullet (1)
Two rival mobs attempt to take control of the disco scene in Honolulu.
Season 11, Episode 13 – Aired: 1/4/1979
Number One With A Bullet (2)
The rival gangs are on the brink of all out war, and Five-O must struggle to stop them.
Season 11, Episode 14 – Aired: 1/18/1979
The Meighan Conspiracy
When a robbed bank vault shows no signs of break-in, an inside job seems the likely solution. McGarrett's trail of clues leads him back to the builder of the vault and his wife...
Season 11, Episode 15 – Aired: 1/25/1979
The Spirit is Willie
Millicent Shand returns and claims that her niece's husband has faked his own death in order to get his hands on $500,000.
Season 11, Episode 16 – Aired: 2/8/1979
The Bark and the Bite
A vacationing heiress seems unconcerned when McGarrett warns her that someone is after her ruby.
Season 11, Episode 17 – Aired: 2/22/1979
When a photographer takes a picture of a politician making a deal with an underworld figure, he tries blackmail. However, he is not prepared for the ruthless nature of the mobsters.
Season 11, Episode 18 – Aired: 3/1/1979
The Execution File
A private detective is rescuing girls from prostitution, and using the opportunity to kill the pimps as well.
Season 11, Episode 19 – Aired: 3/15/1979
A Very Personal Matter
When the son of one of Steve's friends dies of an overdose, he goes after a doctor that he suspects of over-prescribing drugs.
Season 11, Episode 20 – Aired: 3/22/1979
The Skyline Killer
The hunt for a high-rise killer is made more difficult for Five-O when a journalist offers to share his profits in exchange for the killer's story.
Season 11, Episode 21 – Aired: 4/5/1979
The Year of the Horse (1)
When a woman dies due to heroin packets bursting inside her and the Governor is implicated, McGarrett and Danno head off to Singapore to discover a smuggling operation.
Season 11, Episode 22 – Aired: 4/5/1979
The Year of the Horse (2)
Five-O must close the heroin smuggling operation to exonerate the Governor and catch the figures behind the scheme.
Season 12, Episode 1 – Aired: 10/4/1979
A Lion in the Streets (1)
McGarrett finds himself stymied when Hawaiian nationalists and local underworld mobsters clash over a union election.
Season 12, Episode 2 – Aired: 10/4/1979
A Lion in the Streets (2)
Labouring under a ban on cooperation by native Hawaiians because of a Kahuna, McGarrett must try to prevent war on the streets.
Season 12, Episode 3 – Aired: 10/11/1979
Who Says Cops Don't Cry
When the husband of a policewoman is gunned down by opportunist robbers, she resolves to catch them any way she can.
Season 12, Episode 4 – Aired: 10/18/1979
Though the Heavens Fall
A group of high society men set out to see that justice is done, the catch being that it is justice on their terms only.
Season 12, Episode 5 – Aired: 10/25/1979
Sign of the Ram
Jessica Humboldt, an astrologer and friend of Agnes DuBois, comes to McGarrett with news that a forthcoming match will be disastrous for a boxer. McGarrett must overcome his suspicions and crack the case.
Season 12, Episode 6 – Aired: 11/1/1979
Good Help is Hard to Find
Tony Alika and Guido Marioni, killer of Kimo's family, together hatch a plot to frame and embarrass the Five-O team by making them look stupid or corrupt.
Season 12, Episode 7 – Aired: 11/8/1979
Image of Fear
When a woman is stalked by a strange figure, she seems to be seeing things and her friends are worried as to her mental health. However, events prove her case and an accomplice is revealed.
Season 12, Episode 8 – Aired: 11/29/1979
Use a Gun, Go to Hell
When two surfer bums use a gun to rob a shop, it starts off a trail of death and misery involving children, politics and blackmail.
Season 12, Episode 9 – Aired: 12/4/1979
Voice of Terror
A group of terrorists capture a female officer and use her to further their aims. McGarrett and the team must find a way to take them out without endangering the life of Officer Dean.
Season 12, Episode 10 – Aired: 12/11/1979
A Shallow Grave
A young man on vacation has strange visions that lead him to the site of an old murder and help him discover a lost family.
Season 12, Episode 11 – Aired: 12/18/1979
When two healthy young people die mysteriously, local traditions prevent autopsies. A strange conspiracy is gradually uncovered when Truck seems to fall under the power of a Kahuna.
Season 12, Episode 12 – Aired: 12/25/1979
When a rich socialite is kidnapped, her husband insists that Five-O stay out of the case. However, his reasons may not all be on the level as events take a series of twists and turns.
Season 12, Episode 13 – Aired: 1/1/1980
School for Assassins
McGarrett and Kimo must stop a gang of trained assassins from disrupting a meeting of energy ministers.
Season 12, Episode 14 – Aired: 1/8/1980
For Old Times Sake
A aging crook decides to use dollar-bill printing plates he made to raise cash for a charity, but he fails to realize the trouble that this will cause.
Season 12, Episode 15 – Aired: 1/15/1980
The Golden Noose
McGarrett is suspicious of an aide who arrives in Hawaii to retrieve millions of dollars held in trust for a Southern Asian state. He must prevent a daring gold robbery.
Season 12, Episode 16 – Aired: 3/1/1980
The Flight of the Jewels
A gang of clever students use radio-controlled planes to execute the theft of Queen Liliuokalani's jewels.
Season 12, Episode 17 – Aired: 3/8/1980
Clash of Shadows
The murder of a Nazi-hunter and discovery of a World War II medal set McGarrett and the team on the trail of a Nazi war criminal living in Honolulu.
Season 12, Episode 18 – Aired: 3/22/1980
A Bird In Hand...
A group of seemingly harmless birdwatchers are the target of a vendetta. Five-O must discover why they were a target and stop any further violence.
Season 12, Episode 19 – Aired: 3/29/1980
The Moroville Covenant
A politician running for the Senate is weakened by the murder of the man who is blackmailing him.
Season 12, Episode 20 – Aired: 4/5/1980
Woe to Wo Fat
To investigate the disappearance of three scientists, McGarrett disguises himself as a colleague and finds himself up against his evil nemesis Wo Fat.