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