Seasons & episodes
S10 · E1Up The Rebels 1977-09-15 · 60 min
An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
S10 · E2You Don't See Many Pirates These Days 1977-09-22 · 60 min
When a sea-freighter is hijacked, the wealthy millionaire owner calls in Five-O, but all is not how it seems...
S10 · E3The Cop On The Cover 1977-09-29 · 60 min
McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analysing his every move.
S10 · E4The Friends Of Joey Kalima 1977-10-13 · 60 min
McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
S10 · E5The Descent Of The Torches 1977-10-20 · 60 min
Five-O must find out whether the death of an archaeologist is linked to his supposed desecration of tomb of King Kamehameha.
S10 · E6The Ninth Step 1977-10-27 · 60 min
The return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armoured truck robbers.
S10 · E7Shake Hands With The Man On The Moon 1977-11-10 · 60 min
McGarrett must deal with an astronaut turned real-estate salesman in order to crack the case of a murdered reporter.
S10 · E8Deadly Doubles 1977-11-17 · 60 min
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
S10 · E9Deep Cover 1977-12-08 · 60 min
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
S10 · E10Tsunami 1977-12-22 · 60 min
A gang of university students plan a hoax tidal wave in order to steal priceless jewelry.
S10 · E11East Wind -- Ill Wind 1977-12-29 · 60 min
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 · E12Tread The King's Shadow 1978-01-05 · 60 min
McGarrett 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.
S10 · E13The Big Aloha 1978-01-12 · 60 min
A young doctor is suspected of having been involved in the murder of his mentor.
S10 · E14A Short Walk On The Longshore 1978-02-02 · 60 min
In order to find out the identity of the murderer of a union leader, McGarrett goes undercover as a longshoreman.
S10 · E15The Silk Trap 1978-02-09 · 60 min
An up-and-coming young politician is blackmailed in order to affect his leadership of an congressional investigation.
S10 · E16Head To Head 1978-02-16 · 60 min
While pursuing a drug dealer, McGarrett also has to contend with a federal agent.
S10 · E17Tall On The Wave 1978-03-02 · 60 min
Danno must deal with a surfer, one of his friends, who is suspected of the murder of a girl.
S10 · E18Angel In Blue 1978-03-09 · 60 min
A female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case.
S10 · E19When Does A War End? 1978-03-16 · 60 min
A Japanese businessman comes under attack from a young man whose father suffered in an Japanese Prisoner of War camp.
S10 · E20Invitation To Murder 1978-03-23 · 60 min
McGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive.
S10 · E21Frozen Assets 1978-03-30 · 60 min
A cryogenics institute comes under suspicion when an investigative writer becomes involved.
S10 · E22My Friend, The Enemy 1978-04-13 · 60 min
Five-O must deal with the kidnapping of an Arab princess, and Steve must also deal with an Italian female journalist's constant interruptions.
S10 · E23A Stranger In His Grave 1978-04-27 · 60 min
Five-O become involved in a complex case of body-switching, mystery investments and suitcases full of money.
S10 · E24A Death In The Family 1978-05-04 · 60 min
Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.