Season 12
20 episodes · Oct 3, 1979
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S12E1A Lion In The Streets (1)
Oct 4, 197960mMcGarrett finds himself stymied when Hawaiian nationalists and local underworld mobsters clash over a union election.
S12E2A Lion In The Streets (2)
Oct 4, 197960mLabouring under a ban on cooperation by native Hawaiians because of a Kahuna, McGarrett must try to prevent war on the streets...
S12E3Who Says Cops Don't Cry
Oct 11, 197960mWhen the husband of a policewoman is gunned down by opportunist robbers, she resolves to catch them any way she can.
S12E4Though The Heavens Fall
Oct 18, 197960mA group of high society men set out to see that justice is done - the catch being that it is justice on their terms only...
S12E5Sign Of The Ram
Oct 25, 197960mJessica 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.
S12E6Good Help Is Hard To Find
Nov 1, 197960mTony 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.
S12E7Image Of Fear
Nov 8, 197960mWhen 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...
S12E8Use A Gun, Go To Hell
Nov 29, 197960mWhen two surfer bums use a gun to rob a shop, it starts off a trail of death and misery involving children, politics and blackmail.
S12E9Voice Of Terror
Dec 4, 197960mA group of terrorists capture a female officer and use her to further their aims, and McGarrett and the team must find a way to take them out without endangering the life of Officer Dean.
S12E10A Shallow Grave
Dec 11, 197960mA young man on vacation has strange visions that lead him to the site of an old murder and help him discover a lost family.
S12E11The Kahuna
Dec 18, 197960mWhen two healthy young people die mysteriously, local traditions prevent post mortems, and a strange conspiracy is gradually uncovered when Truck seems to fall under the power of a Kahuna...
S12E12Labyrinth
Dec 25, 197960mWhen 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...
S12E13School For Assassins
Jan 1, 198060mMcGarrett and Kimo must stop a gang of trained assassins from disrupting a meeting of energy ministers.
S12E14For Old Times Sake
Jan 8, 198060mA aging crook decides to use dollar bill printing plates he made to raise cash for a charity, but he fails to realise the trouble that this will cause.
S12E15The Golden Noose
Jan 15, 198060mMcGarrett is suspicious of an aide who arrives in Hawaii to retrieve millions of dollars held in trust for a Southern Asian state and he must prevent a daring gold robbery.
S12E16The Flight Of The Jewels
Mar 1, 198060mA gang of clever students use radio-controlled planes to execute the theft of Queen Liliokalani's jewels.
S12E17Clash Of Shadows
Mar 8, 198060mThe 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...
S12E18A Bird In Hand...
Mar 22, 198060mA 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.
S12E19The Moroville Covenant
Mar 29, 198060mA politician trying for the Senate is weakened by the murder of the man who is blackmailing him.
S12E20Woe To Wo Fat
Apr 5, 198060mThe series concludes with the final showdown between McGarrett and Wo Fat. Three scientists have gone missing. They have one thing in common: they all attended a symposium that discussed a possible space-based, laser defense system. McGarrett impersonates a fourth scientist, Dr. Elton Raintree, who attended the same gathering and is soon abducted. Wo Fat is behind it all and wants the scientists to complete their work and produce such a device.