Season 10
24 episodes
1. Up The Rebels
1h 0m · Sep 15, 1977
An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
2. You Don't See Many Pirates These Days
1h 0m · Sep 22, 1977
When a sea-freighter is hijacked, the wealthy millionaire owner calls in Five-O, but all is not how it seems...
3. The Cop On The Cover
1h 0m · Sep 29, 1977
McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analysing his every move.
4. The Friends Of Joey Kalima
1h 0m · Oct 13, 1977
McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
5. The Descent Of The Torches
1h 0m · Oct 20, 1977
Five-O must find out whether the death of an archaeologist is linked to his supposed desecration of tomb of King Kamehameha.
6. The Ninth Step
1h 0m · Oct 27, 1977
The return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armoured truck robbers.
7. Shake Hands With The Man On The Moon
1h 0m · Nov 10, 1977
McGarrett must deal with an astronaut turned real-estate salesman in order to crack the case of a murdered reporter.
8. Deadly Doubles
1h 0m · Nov 17, 1977
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
9. Deep Cover
1h 0m · Dec 8, 1977
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
10. Tsunami
1h 0m · Dec 22, 1977
A gang of university students plan a hoax tidal wave in order to steal priceless jewelry.
11. East Wind -- Ill Wind
1h 0m · Dec 29, 1977
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.
12. Tread The King's Shadow
1h 0m · Jan 5, 1978
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.
13. The Big Aloha
1h 0m · Jan 12, 1978
A young doctor is suspected of having been involved in the murder of his mentor.
14. A Short Walk On The Longshore
1h 0m · Feb 2, 1978
In order to find out the identity of the murderer of a union leader, McGarrett goes undercover as a longshoreman.
15. The Silk Trap
1h 0m · Feb 9, 1978
An up-and-coming young politician is blackmailed in order to affect his leadership of an congressional investigation.
16. Head To Head
1h 0m · Feb 16, 1978
While pursuing a drug dealer, McGarrett also has to contend with a federal agent.
17. Tall On The Wave
1h 0m · Mar 2, 1978
Danno must deal with a surfer, one of his friends, who is suspected of the murder of a girl.
18. Angel In Blue
1h 0m · Mar 9, 1978
A female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case.
19. When Does A War End?
1h 0m · Mar 16, 1978
A Japanese businessman comes under attack from a young man whose father suffered in an Japanese Prisoner of War camp.
20. Invitation To Murder
1h 0m · Mar 23, 1978
McGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive.
21. Frozen Assets
1h 0m · Mar 30, 1978
A cryogenics institute comes under suspicion when an investigative writer becomes involved.
22. My Friend, The Enemy
1h 0m · Apr 13, 1978
Five-O must deal with the kidnapping of an Arab princess, and Steve must also deal with an Italian female journalist's constant interruptions.
23. A Stranger In His Grave
1h 0m · Apr 27, 1978
Five-O become involved in a complex case of body-switching, mystery investments and suitcases full of money.
24. A Death In The Family
1h 0m · May 4, 1978
Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.