Hawaii Five-O (Classic)

McGarrett is puzzled when a computer programmed to help solve the slaying of an underworld figure's "business associate" indicates that the culprit is one of McGarrett's own people.

Ricardo Montalban plays Alex Pareno, a wealthy auto-racing enthusiast whose mechanic is slain on the eve of Hawaii's most important road race.

A series of deaths of well-to-do businessmen puts the Hawaii Five-O unit into the investigation of a lucrative blackmail operation.

Danny Williams is involved in the shooting of a teenager following the death of a fellow police officer, and a cry goes up to sacrifice the lawman to public opinion.

Khigh Dhiegh returns as the sinister criminal genius Wo Fat to match wits with McGarrett. This time, a petty criminal is slain during the theft of a secret ballistic missile device, and McGarrett suspects that his arch nemesis, Wo Fat, is behind the theft.

Army officer Jack Gulley, played by Clu Gulager, devises a bizarre scheme to kidnap a top government scientist and collect a ransom of one million dollars in diamonds.

The slaying of a public health official while conducting an investigation into venereal disease leads McGarrett into the world of politics and intrigue.

Keenan Wynn guest stars as the trusted friend of a Chinese diplomat who is the object of an assassination plan which Danny Williams stumbles upon, but whose details he cannot remember when he is injured.

McGarrett's investigation into a new crime outbreak leads to a band of youths led by Chris Vashon, a third generation member of a crime family headed by his grandfather, Dominick.

The Vashon family buries young Chris Vashon and launches a vendetta against Five-O's chief investigator, whom they hold responsible for the boy's death.

With his son in prison and his grandson dead, both as a result of McGarrett's actions, the patriarch of the Vashon crime syndicate, old Dominick, devises a cunning scheme to frame the chief of Five-O and send him to prison in disgrace.

A series of bomb threats follows the arrest of a band of Hawaiian vigilantes, and McGarrett is assigned to preserve security and ensure an orderly trial.

Andy Griffith and Joyce Van Patten pay a husband-and-wife team of confidence operators who get caught between two of the islands' most powerful mobs, almost touching off a war among competing underworld factions.

An infant is taken from his stroller on a Honolulu street as McGarrett and his Five-O forces wait unsuccessfully for a ransom demand in order to trap the kidnappers.

Patty Duke and Carol Lawrence are the guest stars as McGarrett goes after the untouchable king-pin of narcotics traffic in the islands.

Dr. Eric Fowler, a psychiatrist, becomes the victim of an extortion effort by a clever paranoiac found too disturbed to treat.

McGarrett and Danny Williams must solve the riddle of how a suspected killer can appear to be in two places at one time.

Richard Basehart plays the mastermind behind a 40-million-dollar conspiracy to rob the Honolulu Stock Exchange.

Nehemiah Persoff plays an obscure shopkeeper who calls himself Peter Winkler and becomes the catalyst in a plot to assassinate a high-level Iron Curtain defector.

Nina Foch plays a grandmother whose only grandchild is kidnapped by two ineffectual crooks.

A travel agent operating gambling junkets is slain as a warning to his partner to stop competing for the gambling business.

McGarrett attempts to crack an extortion ring preying on small business men.

A cat burglar strikes at the home of a socially prominent island family, setting off a fast-moving series of events that lead to a death.

A police informer tells McGarrett that one of the jurors in the murder trial of an island strong-arm has been bribed in an effort to produce a hung jury.