1Up The Rebels
An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles.
2You 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...
3The Cop On The Cover
McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analysing his every move.
4The Friends Of Joey Kalima
McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity.
5The 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.
6The Ninth Step
The return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armoured truck robbers.
7Shake 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.
8Deadly Doubles
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
9Deep Cover
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
10Tsunami
A gang of university students plan a hoax tidal wave in order to steal priceless jewelry.
11East 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.
12Tread 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.
13The Big Aloha
A young doctor is suspected of having been involved in the murder of his mentor.
14A 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.
15The Silk Trap
An up-and-coming young politician is blackmailed in order to affect his leadership of an congressional investigation.
16Head To Head
While pursuing a drug dealer, McGarrett also has to contend with a federal agent.
17Tall On The Wave
Danno must deal with a surfer, one of his friends, who is suspected of the murder of a girl.
18Angel In Blue
A female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case.
19When Does A War End?
A Japanese businessman comes under attack from a young man whose father suffered in an Japanese Prisoner of War camp.
20Invitation To Murder
McGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive.
21Frozen Assets
A cryogenics institute comes under suspicion when an investigative writer becomes involved.
22My 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.
23A Stranger In His Grave
Five-O become involved in a complex case of body-switching, mystery investments and suitcases full of money.
24A Death In The Family
Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.