Seasons & episodes
S3 · E20The Gunrunner 1971-02-10 · 60 min
The wife of an arms dealer is kidnapped by revolutionaries who want the guns diverted from their original destination, but the arms dealer himself is not as innocent as matters would indicate…
S3 · E21Dear Enemy 1971-02-17 · 60 min
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 · E22The Bomber And Mrs. Moroney 1971-02-24 · 60 min
Danno's past comes back to haunt him when the brother of a young boy he shot is released and wants revenge. The brother takes Chin Ho, Jenny and others hostage in McGarrett's office and threatens to blow them up, and Danno must resolve the tense situation.
S3 · E23The Grandstand Play (1) 1971-03-03 · 60 min
A baseball player, Lon Phillips, brings his backward son to Hawaii to escape threats on his life on the mainland.
S3 · E24The Grandstand Play (2) 1971-03-10 · 60 min
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 of the crime.
S4 · E1Highest Castle, Deepest Grave 1971-09-14 · 60 min
A ten year old case is reopened when an archaeological dig unearths the skeletons of two murder victims.
S4 · E2No Bottles... No Cans... No People 1971-09-21 · 60 min
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.
S4 · E3Wednesday, Ladies Free 1971-09-28 · 60 min
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.
S4 · E43,000 Crooked Miles To Honolulu 1971-10-05 · 60 min
Five-O is up against a sophisticated gang who have come to Hawaii to cash $750,000 of traveller's cheques.
S4 · E5Two Doves And Mr. Heron 1971-10-12 · 60 min
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…
S4 · E6...And I Want Some Candy And A Gun That Shoots 1971-10-19 · 60 min
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.
S4 · E7Air Cargo -- Dial For Murder 1971-10-26 · 60 min
While investigating the death of a security agent at an airport, McGarrett comes into contact with a gang who hijack cargo.
S4 · E8For A Million... Why Not? 1971-11-02 · 60 min
Five seemingly good citizens with different motives band together to steal $6,000,000 while McGarrett is away on Maui at a trial.
S4 · E9The Burning Ice 1971-11-09 · 60 min
McGarrett finds holes in a convict's story and a husband becomes a suspect in the murder of his wife.
S4 · E10Rest In Peace, Somebody 1971-11-16 · 60 min
A policeman who was kicked off the force blames McGarrett and Five-O and plans to kill the Governor.
S4 · E11A Matter Of Mutual Concern 1971-11-23 · 60 min
McGarrett must deal with the conflicts between four gangs of differing ethnic background, and try to uncover illegal activities.
S4 · E12Nine, Ten -- You're Dead 1971-11-30 · 60 min
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 · E13Is This Any Way To Run A Paradise? 1971-12-21 · 60 min
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 · E14Odd Man In 1971-12-28 · 60 min
A veteran criminal who has already had dealings with Five-O escapes, and plans to steal millions of dollars from drug smugglers.
S4 · E15Bait Once, Bait Twice 1972-01-04 · 60 min
A woman attempts suicide in order to get her boyfriend to come out into the open and expose himself to an assassination attempt.
S4 · E16The Ninety-Second War (1) 1972-01-11 · 60 min
McGarrett is framed in an elaborate set up by Wo Fat, and has to contend with a foreign double amongst other problems.
S4 · E17The Ninety-Second War (2) 1972-01-18 · 60 min
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 · E18Skinhead 1972-01-25 · 60 min
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 · E19While You're At It, Bring In The Moon 1972-02-01 · 60 min
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.