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