Season 10
24 episodes · Sep 14, 1977
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S10E1Up The Rebels
Sep 15, 197760mAn Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
S10E2You Don't See Many Pirates These Days
Sep 22, 197760mWhen a sea-freighter is hijacked, the wealthy millionaire owner calls in Five-O, but all is not how it seems...
S10E3The Cop On The Cover
Sep 29, 197760mMcGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analysing his every move.
S10E4The Friends Of Joey Kalima
Oct 13, 197760mMcGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
S10E5The Descent Of The Torches
Oct 20, 197760mFive-O must find out whether the death of an archaeologist is linked to his supposed desecration of tomb of King Kamehameha.
S10E6The Ninth Step
Oct 27, 197760mThe return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armoured truck robbers.
S10E7Shake Hands With The Man On The Moon
Nov 10, 197760mMcGarrett must deal with an astronaut turned real-estate salesman in order to crack the case of a murdered reporter.
S10E8Deadly Doubles
Nov 17, 197760mWhen a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
S10E9Deep Cover
Dec 8, 197760mA secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
S10E10Tsunami
Dec 22, 197760mA gang of university students plan a hoax tidal wave in order to steal priceless jewelry.
S10E11East Wind -- Ill Wind
Dec 29, 197760mWhen 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.
S10E12Tread The King's Shadow
Jan 5, 197860mMcGarrett 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.
S10E13The Big Aloha
Jan 12, 197860mA young doctor is suspected of having been involved in the murder of his mentor.
S10E14A Short Walk On The Longshore
Feb 2, 197860mIn order to find out the identity of the murderer of a union leader, McGarrett goes undercover as a longshoreman.
S10E15The Silk Trap
Feb 9, 197860mAn up-and-coming young politician is blackmailed in order to affect his leadership of an congressional investigation.
S10E16Head To Head
Feb 16, 197860mWhile pursuing a drug dealer, McGarrett also has to contend with a federal agent.
S10E17Tall On The Wave
Mar 2, 197860mDanno must deal with a surfer, one of his friends, who is suspected of the murder of a girl.
S10E18Angel In Blue
Mar 9, 197860mA female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case.
S10E19When Does A War End?
Mar 16, 197860mA Japanese businessman comes under attack from a young man whose father suffered in an Japanese Prisoner of War camp.
S10E20Invitation To Murder
Mar 23, 197860mMcGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive.
S10E21Frozen Assets
Mar 30, 197860mA cryogenics institute comes under suspicion when an investigative writer becomes involved.
S10E22My Friend, The Enemy
Apr 13, 197860mFive-O must deal with the kidnapping of an Arab princess, and Steve must also deal with an Italian female journalist's constant interruptions.
S10E23A Stranger In His Grave
Apr 27, 197860mFive-O become involved in a complex case of body-switching, mystery investments and suitcases full of money.
S10E24A Death In The Family
May 4, 197860mFive-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.