) and his elite state police unit as he and his officers investigate corruption and crime plaguing the Hawaiian Islands. For 12 seasons, McGarrett and his team battled international secret agents, criminals and organized crime syndicates, drawing themselves into the world of international espionage and national intelligence.
S1/EP 1 - Cocoon (Part 1)
Steve McGarrett, head of Hawaii Five-O, investigates the death of a close friend who seems to have drowned. Only when he digs deeper does McGarrett discover the chilling truth of the matter
S1/EP 2 - Cocoon (Part 2)
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."
S1/EP 3 - 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.
S1/EP 4 - Strangers in Our Own Land (aka One Day We Shall Be Strangers)
While investigating the assassination of a native-Hawaiian official, McGarrett learns that some fellow Hawaiians resented the victim's pro-development policies.
S1/EP 5 - 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.
S1/EP 6 - Samurai
McGarrett protects a suspected gangster (Tokura) from Japanese assassins, even as he and Five-O try to find evidence linking Tokura to organized crime.
S1/EP 7 - ...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.
S1/EP 8 - Twenty-Four Karat Kill
A woman buys fish from a monger, and is followed home and murdered. McGarrett and the team must discover who killed her and stop smugglers from completing their operation.
S1/EP 9 - Ways of Love, The
After a girl dies during a high-speed car chase, the trail of clues leads to a Los Angeles prison. McGarrett goes undercover as convict Steve Crowley and aids in a prison escape.
S1/EP 10 - No Blue Skies
When a singer, Joey Rand, finds that his career doesn't pay well enough, he turns to cat burglary. However he doesn't reckon on Hawaii Five-O.
S1/EP 11 - By the Numbers
A winning lottery ticket drags an army private into the murky world of mob politics.
S1/EP 12 - Yesterday Dies and Tomorrow Won't Be Born
When McGarrett is shot and badly wounded on a beachside jog, Danno and the team must work feverishly to find the culprit and prevent him from committing any more murders.
S1/EP 13 - Deathwatch
McGarrett must protect a mob underboss so he is able to testify against his superior, Joe Matsukino. However, Matsukino has many tricks up his sleeve to silence his former colleague permanently.
S1/EP 14 - Pray Love Remember, Pray Love Remember
When a young female student is found murdered on campus, suspicions fall on her boyfriend but McGarrett senses that something is not right.
S1/EP 15 - King of the Hill
Danno is taken hostage by a delusional Vietnam veteran who believes everyone is out to get him.
S1/EP 16 - Up Tight
After Danno fails to stop a woman from jumping to her death off a seaside cliff, McGarrett investigates David Stone, a drug-promoting professor.
S1/EP 17 - Face of the Dragon
McGarrett must locate the source of an outbreak of bubonic plague on the Hawaiian islands.
S1/EP 18 - Box, The
Big Chicken returns in a tense prison hostage drama when McGarrett has to give himself over to the criminals as a bargaining chip and use psychology to take control of the situation.
S1/EP 19 - One for the Money
When a girl is found murdered and numbered ‘one', McGarrett suspects a serial killer.
S1/EP 20 - Along Came Joey
When the boxer son of a Maui policeman, Phil Kalama, is killed, he starts a personal vendetta. McGarrett must solve the initial crime and stop Kalama from committing another murder.
S1/EP 21 - Once Upon a Time (Part 1)
McGarrett flies to Los Angeles to investigate a "neurologist" doctor who is treating his cancer-stricken nephew.
S1/EP 22 - Once Upon a Time (Part 2)
McGarrett uses all legal means possible to win the court case against Dr. Fremont in order to stop her fake treatments and save his sister from more anguish and pain.
S1/EP 23 - Not That Much Different
While investigating the murder of a leader of a student anti-war protest, McGarrett faces a wall of silence and the distrust of the activists.
S1/EP 24 - Six Kilos
As Chin Ho and Dan Williams are tracking a safecracker, Danno is forced to shoot him when the suspect draws his weapon. McGarrett takes on the identity of the safecracker Harry Brown in order to infiltrate a sophisticated gang of international thieves.
S1/EP 25 - Big Kahuna, The
Sam Kalakua, a distant uncle of Kono, is being frightened into an early grave by a fake apparition of the Hawaiian goddess of volcanoes and fire, Pele. His nephew and niece want to drive him insane so that they can sell his property to a real-estate mogul.
S10/EP 1 - Up The Rebels
An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
S10/EP 3 - Cop on the Cover, The
McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analyzing his every move.
S10/EP 4 - Friends of Joey Kalima, The
McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
S10/EP 7 - 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.
S10/EP 8 - Deadly Doubles
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
S10/EP 9 - Deep Cover
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
S10/EP 11 - 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.
S10/EP 22 - 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.
S11/EP 5 - Small Potatoes
Steve is framed on the orders of a gambling syndicate, and becomes involved with a woman who is part of the case.
S11/EP 6 - Distant Thunder, A
Five-O must thwart the plans of a Neo-Nazi organization to kill Bobby Tamara, the "Hawaiian Kennedy."
S11/EP 12 - Number One with a Bullet (Part 1)
Two rival mobs attempt to take control of the disco scene in Honolulu.
S11/EP 13 - Number One With a Bullet (Part 2)
The rival gangs are on the brink of all-out war, and Five-O must struggle to stop them.
S11/EP 17 - Stringer
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.
S11/EP 19 - Very Personal Matter, A
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.
S11/EP 20 - Skyline Killer, The
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.
S11/EP 21 - Year of the Horse, The (Part 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.
S11/EP 22 - Year of the Horse, The (Part 2)
Five-O must close the heroin smuggling operation to exonerate the Governor and catch the figures behind the scheme.
S12/EP 1 - Lion in the Streets, The (Part 1)
McGarrett finds himself stymied when Hawaiian nationalists and local underworld mobsters clash over a union election.
S12/EP 2 - Lion in the Streets, The (Part 2)
Labouring under a ban on cooperation by native Hawaiians because of a Kahuna, McGarrett must try to prevent war on the streets.
S12/EP 20 - 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.
S2/EP 1 - Thousand Pardons -- You're Dead!, A
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.
S2/EP 2 - To Hell with Babe Ruth
A Japanese World War II veteran, Yoshio Nagata, thinks it is December 1941 and escapes from a mental hospital and tries to carry out his wartime orders to blow up a refinery.
S2/EP 3 - 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.
S2/EP 4 - Just Lucky, I Guess
A middle-aged mainland hardware salesman uses a prostitute, and then witnesses her murder by a mobster.
S2/EP 5 - Savage Sunday
McGarrett must interrupt his Sunday to deal with both terrorists and politics when a revolutionary group steal guns from a barracks for their overseas cause.
S2/EP 6 - Bullet for McGarrett, A
A university professor is using hypnosis to program students into becoming assassins.
S2/EP 7 - Sweet Terror
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.
S2/EP 8 - 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.
S2/EP 9 - Singapore File, The
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 pair must face many dangers on their return trip back to Hawaii.
S2/EP 10 - 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.
S2/EP 11 - 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.
S2/EP 12 - Devil and Mr. Frog, The
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.
S2/EP 13 - Joker's Wild, Man, Wild!, The
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.
S2/EP 14 - Which Way Did They Go?
A career criminal fools McGarrett and the team into protecting the wrong bank.
S2/EP 15 - Blind Tiger
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").
S2/EP 17 - 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.
S2/EP 18 - Killer Bee
A psychiatric worker is trying to drive a fellow Vietnam veteran crazy.
S2/EP 19 - One with the Gun, The
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.
S2/EP 20 - Cry, Lie
Chin Ho is accused of bribery.
S2/EP 21 - 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.
S2/EP 22 - Nightmare Road
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.
S2/EP 23 - Three Dead Cows at Makapuu (Part 1)
A biological scientist views his work as evil.
S2/EP 24 - Three Dead Cows at Makapuu (Part 2)
The deadly toxin is lost and McGarrett has to find the vial before it disintegrates and poisons the whole island.
S2/EP 25 - 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.
S3/EP 1 - ...And Time to Die
The daughter of a top neurosurgeon is kidnapped.
S3/EP 2 - 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.
S3/EP 3 - Second Shot, The
An opposition leader for Greece is living in exile in Hawaii.
S3/EP 4 - 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.
S3/EP 5 - Guarnerius Caper, The
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.
S3/EP 6 - Ransom, The
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.
S3/EP 7 - Force of Waves
A ruthless businessman is blown up in a boat explosion.
S3/EP 8 - Reunion, The
A Japanese computer research company executive is recognized by a veteran as his former captor in a Philippine prison camp in World War II.
S3/EP 9 - Late John Louisiana, The
The hitman sent to kill the witness to a two-year-old murder instead falls in love with her. McGarrett and the team must lead the search to find her before duty overtakes love.
S3/EP 10 - Last Eden, The
Five-O search for the criminals who set up Hawaiian singer and ecologist Jimmy Nuanu as the fall guy for a sewage plant bombing.
S3/EP 11 - 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.
S3/EP 12 - Beautiful Screamer
Dan Williams' fiancee is murdered by a stranger who writes poetry in lipstick on his victims' legs. Danno resolves to catch the culprit who has other murderous plans to carry out.
S3/EP 13 - Payoff, The
McGarrett must apprehend two criminals who are on the run with the proceeds of their crime in order to protect the lives of their co-conspirators.
S3/EP 14 - Double Wall, The
When a convicted murderer, Harry Kellem, hears a dying man say he committed the crime that Kellem was jailed for, he takes a doctor hostage and McGarrett must negotiate his way out of the situation.
S3/EP 15 - Paniono
A cowboy accidentally kills the crooked real estate agent who had been eyeing his land. McGarrett and the team track the cowboy into the mountains in an attempt to persuade him to give up peacefully.
S3/EP 16 - Ten Thousand Diamonds and a Heart
An electronics genius is busted out of prison so he can mastermind a massive robbery of diamonds from the Honolulu Diamond Exchange.
S3/EP 17 - To Kill or Be Killed
Five-O investigates the death of Vietnam hero Jack Rigney, who fell from a balcony. His father is a World War II veteran, while his brother Michael is considering a move to Canada to avoid the draft. Danno goes undercover as a potential draft dodger to help solve the mystery of Jack's death.
S3/EP 18 - F.O.B. Honolulu (Part 1)
Wo Fat and other top international agents converge on Hawaii to place bids on printing plates for twenty dollar bills, which are in the possession of a former friend of McGarrett.
S3/EP 19 - F.O.B. Honolulu (Part 2)
Five-O must deal with treason, murder and double-crosses in order to solve the case and prevent the U.S. from being flooded with fake currency.
S3/EP 20 - Gunrunner, The
The wife of an arms dealer is kidnapped by revolutionaries who want the guns diverted from their original destination.
S3/EP 21 - Dear Enemy
The wife of a convicted man fakes evidence in a new crime so that McGarrett will have to re-open her husband's case.
S3/EP 22 - Bomber and Mrs. Moroney, The
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.
S3/EP 23 - Grandstand Play, The (Part 1)
A baseball player, Lon Phillips, brings his developmentally challenged son to Hawaii to escape threats on his life on the mainland.
S3/EP 24 - Grandstand Play, The (Part 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.
S4/EP 1 - Highest Castle, Deepest Grave
A ten-year-old case is reopened when an archaeological dig unearths the skeletons of two murder victims.
S4/EP 2 - 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.
S4/EP 3 - Wednesday, Ladies Free
Vic Tanaka is murdering women and painting their faces to resemble a former prostitute, who is now happily married.
S4/EP 4 - 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.
S4/EP 5 - 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.
S4/EP 6 - ...And I Want Some Candy and a Gun That Shoots
Young Vietnam veteran and marksman Billy Shem Jr. buys a rifle under false pretenses and proceeds to a bunker at Diamond Head. He takes pot shots at people on the road and then at the police who arrive.
S4/EP 7 - 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.
S4/EP 8 - For a Million... Why Not?
Five seemingly good citizens with different motives band together to steal $6,000,000 while McGarrett is away on Maui at a trial.
S4/EP 9 - Burning Ice, The
McGarrett finds holes in a convict's story and a husband becomes a suspect in the murder of his wife.
S4/EP 10 - Rest In Peace, Somebody
A policeman who was kicked off the force blames McGarrett and Five-O and plans to kill the Governor.
S4/EP 11 - Matter of Mutual Concern, A
McGarrett must deal with the conflicts among four gangs of differing ethnic background, and try to uncover illegal activities.
S4/EP 12 - 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.
S4/EP 13 - 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.
S4/EP 14 - Old Man In
A veteran criminal who has already had dealings with Five-O escapes, and plans to steal millions of dollars from drug smugglers.
S4/EP 15 - 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.
S4/EP 16 - Ninety-Second War, The (Part 1)
McGarrett is framed in an elaborate set up by Wo Fat, and has to contend with a foreign double amongst other problems.
S4/EP 17 - Ninety-Second War, The (Part 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.
S4/EP 18 - Skinhead
When a young woman is beaten and raped and a soldier is arrested for the crime, McGarrett begins to have doubts about his guilt.
S4/EP 19 - 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.
S4/EP 20 - 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.
S4/EP 21 - 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.
S4/EP 22 - Didn't We Meet at a Murder?
A young widow becomes part of a blackmail plot involving the murder of a Chicago mobster.
S4/EP 23 - Follow the White Brick Road
Danno goes undercover onboard a Navy ship to try and uncover how sailors are smuggling heroin onto the islands.
S4/EP 24 - R&R -- &R
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.
S5/EP 1 - 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 organization behind the false accusations.
S5/EP 2 - 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.
S5/EP 3 - 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.
S5/EP 5 - Jinn Who Clears the Way, The
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.
S5/EP 6 - 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.
S5/EP 8 - 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.
S5/EP 9 - "V" for Vashon: the Son (Part 1)
McGarrett becomes involved with the Vashon mafioso family after the youngest member, Chris, is implicated in a daring raid on a hotel.
S5/EP 10 - "V" for Vashon: the Father (Part 2)
McGarrett must contend with Honore Vashon, who wants revenge for his son's death.
S5/EP 11 - "V" for Vashon: the Patriarch (Part 3)
Dominick Vashon, the patriarch of the clan, makes his attempt to bring down McGarrett and Five-O.
S5/EP 12 - Clock Stuck Twelve, The
When McGarrett arrests a group of vigilante nationalists, hidden bombs at the courthouse threaten to destabilize the islands.
S5/EP 13 - 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.
S5/EP 14 - Child Stealers, The
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.
S5/EP 15 - 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.
S5/EP 16 - Listener, The
A crazed electronics wizard threatens the lives of a psychiatrist and his patients by using electronic devices and gadgets.
S5/EP 17 - 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?
S5/EP 18 - Odd Lot Caper, The
A senior partner in a stock exchange firm comes up with a foolproof plan to rob the Honolulu Stock Exchange.
S5/EP 19 - 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.
S5/EP 20 - 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.
S5/EP 21 - Percentage
A travel agent who operates gambling trips is killed in order to send a warning to others that the syndicates will not tolerate competition.
S5/EP 22 - 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.
S5/EP 23 - Diamond That Nobody Stole, The
A burglary at the home of a well-known island family sets off a series of events that ends in murder.
S5/EP 24 - 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.
S6/EP 1 - Hookman
An amputee with no hands sets out to kill every police officer who contributed to his injury, and that includes Steve McGarrett.
S6/EP 2 - 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.
S6/EP 3 - 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.
S6/EP 4 - One Big Happy Family
A murderous family makes their way to Hawaii after leaving behind a trail of devastation on the mainland.
S6/EP 5 - Sunday Torch, The
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.
S6/EP 6 - 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.
S6/EP 7 - Tricks Are Not Treats
e killing of an important pimp threatens an all-out war between two competing vice empires.
S6/EP 8 - Why Wait Till Uncle Kevin Dies?
A string of five murders of wealthy men leads McGarrett to a crooked inheritance scheme.
S6/EP 9 - 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.
S6/EP 10 - Bullet for El Diablo, A
A dictator must evade a female assassin sent to kill him, one that looks just like his own daughter.
S6/EP 11 - Finishing Touch, The
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…
S6/EP 12 - 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.
S6/EP 13 - 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.
S6/EP 14 - $100,000 Nickel, The
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.
S6/EP 15 - Flip Side Is Death, The
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.
S6/EP 16 - Banzai Pipeline, The
An exciting surf beach is the location for a filming session, where a man catches a killer on camera.
S6/EP 17 - One Born Every Minute
A pair of crooks, teaming up with local criminals, uses phony diamonds as bait to prey on wealthy male tourists.
S6/EP 18 - Secret Witness
A young man witnesses a murder, and finds himself and his family are now the killer's targets.
S6/EP 19 - Death with Father
The son of a Federal Narcotics officer becomes involved in a heroin refining operation.
S6/EP 20 - 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.
S6/EP 21 - Nightmare in Blue
A series of rapes and murders occur, and the main suspect seems to be a police officer.
S6/EP 22 - 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.
S6/EP 23 - 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.
S6/EP 24 - 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.
S7/EP 1 - Young Assassins, The
Danno and a college professor are kidnapped by a revolutionary group of young radicals led by a hardened criminal.
S7/EP 2 - Hawaiian Nightmare, A
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.
S7/EP 3 - 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.
S7/EP 4 - Steal Now -- Pay Later
A sophisticated thief is selling his goods to legitimate businessmen, and Five-O must find a way of trapping him.
S7/EP 7 - 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.
S7/EP 8 - Two-Faced Corpse, The
A gangland execution investigation takes a turn for the peculiar when it is found that the victim had two identities.
S7/EP 9 - How to Steal a Masterpiece
Five-O must investigate why three infallible security systems are failing to prevent the theft of priceless artworks.
S7/EP 10 - Gun for McGarrett, A
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.
S7/EP 11 - Welcome to Our Branch Office
Two con men use a gang of Five-O lookalikes and doubles to extort money from Honolulu businessmen.
S7/EP 12 - 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.
S7/EP 14 - Bone of Contention
A Honolulu murder is mysteriously linked to a human fossil smuggled out of China in the Second World War.
S7/EP 15 - Computer Killer
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.
S7/EP 17 - 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.
S7/EP 20 - 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.
S7/EP 22 - Hostage, The
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.
S7/EP 23 - Diary of a Gun
A Saturday Night Special passes from person to person and causes Five-O trouble and others misery.
S7/EP 24 - 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.
S8/EP 1 - 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.
S8/EP 2 - Murder - Eyes Only (Part 2)
McGarrett must try his utmost to foil Wo Fat's plans which include hostages and brainwashing.
S8/EP 3 - McGarrett Is Missing
McGarrett must again face mobster Charlie Bombay when a plane carrying them to Honolulu crashes in the forests.
S8/EP 4 - 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.
S8/EP 5 - Target: the Lady
Five-O must find a female courier who witnessed a murder before a hitman can.
S8/EP 7 - Case Against McGarrett, The
McGarrett offers himself as a hostage exchange, but is then put on 'trial' by Honore Vashon.
S8/EP 8 - Defector, The
McGarrett meets his match in Dr. Grant Ormsbee, a grumpy and aggravating scientist who is sheltering a suspected Chinese defector.
S8/EP 10 - 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.
S8/EP 12 - Waterfront Steal, The
When Five-O fail to prevent a series of thefts at dockside warehouses, an influential owner creates trouble for McGarrett.
S8/EP 14 - Touch of Guilt, A
Three boys commit a gang rape on a waitress, but one is the son of a Senator and the crime is covered up
S8/EP 15 - 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.
S8/EP 17 - Legacy to Terror
When an elderly importer who was a World War II Japanese spy is killed, Five-O seeks his killer.
S8/EP 18 - Loose Ends Get Hit
A clear cut murder case against an island mobster is derailed due to McGarrett.
S8/EP 20 - Turkey Shoot at Makapuu
When an airline stewardess and a hang-gliding instructor are murdered, Five-O must find the killers.
S8/EP 22 - Capsule Kidnapping, The
The son of a Japanese businessman is kidnapped and held in a capsule underwater until a $1.5 million dollar ransom is paid.
S9/EP 1 - 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.
S9/EP 2 - 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.
S9/EP 6 - Tour de Force, Killer Aboard
Two seemingly unconnected deaths lead McGarrett into a desperate race to prevent the assassination of a visiting Sheikh.
S9/EP 7 - Last of the Great Paperhangers, The
A masterful forger who McGarrett once testified against arrives in Hawaii and plans a massive robbery of US Navy funds.
S9/EP 8 - Heads, You're Dead
When yacht racers are found dead on their craft, Five-O launches a desperate search for high-seas buccaneers.
S9/EP 9 - Let Death Do Us Part
An escaped convict may well have a strong case of innocence, when Five-O become involved in the paranormal.
S9/EP 10 - Double Exposure
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.
S9/EP 12 - 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.
S9/EP 13 - Bells Toll at Noon, The
The boyfriend of an overdose victim re-enacts famous film murders in a revenge on all the people he sees as responsible.
S9/EP 14 - Man in a Steel Frame
McGarrett is the top suspect in the murder of his girlfriend, and the evidence against him is seemingly overwhelming.
S9/EP 16 - 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.
S9/EP 17 - Dealer's Choice -- Blackmail
A hit and run incident leads Five-O to a gambling syndicate and Officer Welles's brother.
S9/EP 18 - Capitol Crime, A
A pensioner threatens to blow himself and his hostages up if he doesn't stop the demolition of his home.
S9/EP 20 - 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.