Season 4 (1971)
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Episodes 24
Highest Castle, Deepest Grave
A ten year old case is reopened when an archaeological dig unearths the skeletons of two murder victims.
Read MoreNo Bottles... No Cans... No People
Gangster Johnny Oporta arranges for his enemies to be murdered and then covers up his crimes by incinerating their bodies. McGarrett and the others must stop this murderous spree.
Read MoreWednesday, Ladies Free
Vic Tanaka is murdering women and painting their faces to resemble a prostitute he once knew, who is now happily married. McGarrett and his team must find the killer before he does any more damage.
Read More3,000 Crooked Miles To Honolulu
Five-O is up against a sophisticated gang who have come to Hawaii to cash $750,000 of traveller's cheques.
Read MoreTwo Doves And Mr. Heron
A hippie robs an embezzler of the key to a locker containing $250,000. Meanwhile, Danno is trying to contact the daughter of his Berkeley University landlady, who happens to be the hippie's girlfriend…
Read More...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 then takes pot shots at the people on the road and then the police who arrive. McGarrett must neutralise the threat he poses by any means possible.
Read MoreAir Cargo -- Dial For Murder
While investigating the death of a security agent at an airport, McGarrett comes into contact with a gang who hijack cargo.
Read MoreFor 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.
Read MoreThe Burning Ice
McGarrett finds holes in a convict's story and a husband becomes a suspect in the murder of his wife.
Read MoreRest In Peace, Somebody
A policeman who was kicked off the force blames McGarrett and Five-O and plans to kill the Governor.
Read MoreA Matter Of Mutual Concern
McGarrett must deal with the conflicts between four gangs of differing ethnic background, and try to uncover illegal activities.
Read MoreNine, 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.
Read MoreIs 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.
Read MoreOdd Man In
A veteran criminal who has already had dealings with Five-O escapes, and plans to steal millions of dollars from drug smugglers.
Read MoreBait 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.
Read MoreThe 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.
Read MoreThe 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.
Read MoreWhile 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.
Read MoreCloth 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.
Read MoreGood 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…
Read MoreDidn't We Meet At A Murder?
A young widow becomes part of a blackmail plot involving the murder of a Chicago mobster.
Read MoreFollow The White Brick Road
Danno goes undercover onboard a Navy ship to try and uncover how sailors are smuggling heroin onto the islands.
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