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
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
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
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
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
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
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
Nov 17, 1977
When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident.
9: Deep Cover
Dec 8, 1977
A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett.
10: Tsunami
Dec 22, 1977
A gang of university students plan a hoax tidal wave in order to steal priceless jewelry.
11: East Wind -- Ill Wind
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
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
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
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
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
Feb 16, 1978
While pursuing a drug dealer, McGarrett also has to contend with a federal agent.
17: Tall On The Wave
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
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?
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
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
Mar 30, 1978
A cryogenics institute comes under suspicion when an investigative writer becomes involved.
22: My Friend, The Enemy
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
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
May 4, 1978
Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed.
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