An Irish terrorist uses disguise and deception in order to be able to smuggle explosives for the Troubles. Air Date : 15th-Sep-1977  Read More

When a sea-freighter is hijacked, the wealthy millionaire owner calls in Five-O, but all is not how it seems... Air Date : 22nd-Sep-1977  Read More

McGarrett must solve both a mysterious kidnapping and the problem of having a nosy reporter analysing his every move. Air Date : 29th-Sep-1977  Read More

McGarrett engages in a personal struggle to clear the record of an officer and close friend accused of criminal activity. Air Date : 13th-Oct-1977  Read More

Five-O must find out whether the death of an archaeologist is linked to his supposed desecration of tomb of King Kamehameha. Air Date : 20th-Oct-1977  Read More

The return of a disgraced alcoholic policeman causes extra problems in the pursuit of a pair of armoured truck robbers. Air Date : 27th-Oct-1977  Read More

McGarrett must deal with an astronaut turned real-estate salesman in order to crack the case of a murdered reporter. Air Date : 10th-Nov-1977  Read More

When a Russian tennis star wants to defect, McGarrett must work to prevent an international incident. Air Date : 17th-Nov-1977  Read More

A secret submarine, the murder of a Navy officer and strange amnesia create a puzzling case for Steve McGarrett. Air Date : 8th-Dec-1977  Read More

A gang of university students plan a hoax tidal wave in order to steal priceless jewellery. Air Date : 22nd-Dec-1977  Read More

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. Air Date : 29th-Dec-1977  Read More

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. Air Date : 5th-Jan-1978  Read More

A young doctor is suspected of having been involved in the murder of his mentor. Air Date : 12th-Jan-1978  Read More

In order to find out the identity of the murderer of a union leader, McGarrett goes undercover as a longshoreman. Air Date : 2nd-Feb-1978  Read More

An up-and-coming young politician is blackmailed in order to affect his leadership of an congressional investigation. Air Date : 9th-Feb-1978  Read More

While pursuing a drug dealer, McGarrett also has to contend with a federal agent. Air Date : 16th-Feb-1978  Read More

Danno must deal with a surfer, one of his friends, who is suspected of the murder of a girl. Air Date : 2nd-Mar-1978  Read More

A female undercover cop threatens the progress of an investigation when she starts a relationship with a man connected to the case. Air Date : 9th-Mar-1978  Read More

A Japanese businessman comes under attack from a young man whose father suffered in an Japanese Prisoner of War camp. Air Date : 16th-Mar-1978  Read More

McGarrett must deal with an apparent mass murderer when a will creates a fortune for the last family member left alive. Air Date : 23rd-Mar-1978  Read More

A cryogenics institute comes under suspicion when an investigative writer becomes involved. Air Date : 30th-Mar-1978  Read More

Five-O must deal with the kidnapping of an Arab princess, and Steve must also deal with an Italian female journalist's constant interruptions. Air Date : 13th-Apr-1978  Read More

Five-O become involved in a complex case of body-switching, mystery investments and suitcases full of money. Air Date : 27th-Apr-1978  Read More

Five-O's world is shattered when mobsters catch Chin Ho undercover and order him to be killed. Air Date : 4th-May-1978  Read More