Hawaii Five-O (1968 TV series) season 4

A ten-year-old missing-persons case is reopened when an archaeological dig reveals the bodies of a man and a woman who were murdered. Herbert Lom, France Nuyen (who plays both the victim and killer) and Jeff Corey guest star.

NOTE: Herman Wedemeyer appears in this episode as the judge.

An ambitious hoodlum (Henry Darrow) tries to eliminate the competition and open the way for a mainland crime syndicate to operate in Hawaii. Beth Brickwell and Ron Feinberg guests stars.

NOTES: Before becoming a series regular in season 5, Al Harrington plays one of the hoodlum's henchmen in this episode.

A strangler murders women and leaves each wearing a blonde wig and their faces garishly made up. Soon Tek-Oh and Monte Markham guest star.

A brilliant but criminal college professor (Buddy Ebsen) runs an elaborate scheme to cash $750,000 worth of stolen travelers checks in Hawaii. But his plan is hindered by two foolish hit-men. David Canary also guest stars.At the end Mcgarret proclaims to the 747 planeload of the professor and his accomplices that their next de stination is not the mainland but 15 years in prison with the concluding remark "Aloha Suckers".

A tourist (Vic Morrow) declines to press charges after being robbed of his wallet by a hippie buffoon (John Ritter) after mistaking the tourist as a homosexual. Inside the wallet is a key to a storage locker containing $250,000, which the tourist embezzled from the mainland.

A psychotic sniper (Michael Burns) endangers the lives of motorists as he fires at cars from a hillside bunker on Diamond Head that overlooks a major highway. Annette O'Toole guest stars.

NOTE: Herman Wedemeyer appears in this episode as HPD officer Duke Kanaha.

McGarrett discovers an air cargo hijacking ring while investigating the death of an airport security officer working undercover as a freight handler. Michael Strong, Marion Ross and James Hong guest star.

Five upstanding citizens team together and commit four murders to steal $6 million from an armored car in a seemingly perfect crime. Glenn Cannon, Al Harrington, Sam Melville and Jack Kruschen guest star.

NOTE: Date given in episode is August 23, 1971.

A doctor becomes a suspect in the murder of his wife when McGarrett does not believe the dying killer's confession. Jackie Cooper and Lou Antonio guest star.

McGarrett receives calls from a man (Norm Alden) threatening to kill someone in 51 hours and the only clue as to the identity of the victim is a key; two false clues and a paint trail.

When an emissary of "Big Uncle," the mainland syndicate's boss of bosses, is murdered, McGarrett fears a gangland war is about to break out among the four crime bosses in Hawaii. David Opatoshu and Manu Tupou guest star.

A syndicate boss (Albert Paulsen) seeks revenge when his light-heavyweight boxer's hand is smashed by a punchy ex-fighter (Moses Gunn).

McGarrett searches for an ecology fanatic whose pranks are harmless until he threatens the lives of those he feels are the cause of the islands' pollution.

Lewis Avery Filer (Hume Cronyn), last encountered in "Over Fifty? Steal" (season 3, episode 11), escapes from prison after devising a plan to steal $4 million from drug smugglers. McGarrett's only clues are a stolen photograph and an I.O.U. for $2,200 in stolen money.

A young woman is blackmailed into attempting suicide so that her fiance will come out of hiding and expose himself to assassination. Loretta Swit, Malachi Throne and James Olson guest star. First appearance of Glenn Cannon as District Attorney John Manicote.

McGarrett is framed as a thief by Wo Fat, whose devious plot involves a notebook filled with secret codes--written in McGarrett's handwriting, of all things. Note this episode has a scene of Danny Williams talking through a broken car window to the injured Steve McGarrett (in the next season this scene replaced the opening teaser of Williams from Season 1). Dana Wynter guest stars. Jack Lord stars as Steve McGarrett and his imposter (who speaks with a dubbed British accent). Donald Pleasence guest stars.

NOTE: Herman Wedemeyer appears in this episode as HPD officer Ishi.

Wo Fat's plan revolves around a missile test--and ninety crucial seconds. Guest stars Roger C. Carmel as Misha the Bear ("F.O.B. Honolulu", season 3, episodes 18 and 19); Tim O'Connor as Jonathan Kaye. As the legal owner of Wo Fat's 2.2 million Mcgarret donates it to the HPD Widow's Orphans and survivors Fund.

NOTE: Zulu (credited) does not appear in this episode.

After a young woman is raped in a parking lot and a braggart soldier is arrested and tried for the crime, McGarrett begins to suspect the soldier may be the wrong man.

A germophobic, eccentric billionaire (loosely based on Howard Hughes), suspected of killing one of his business associates, but who in turn suspects another, is afraid to leave his antiseptic yacht and clear himself of the crime--and he is forced to abduct McGarrett to help him. McGarrett must uncover the real killer from the remaining three living associates. Barry Sullivan, Milton Selzer, Ed Flanders guest star.

NOTE: Herman Wedemeyer now cast as HPD officer Duke (no last name). In episode 4, he was cast as Duke Kanaha.

Three Conmen members of a fishy real estate company become victims of poison contained in a rare shellfish.Al Eben as "Doc"; Jason Evers and Jay Robinson guest star. The teaser of the killer scuba diving is a stock shot. Date of a death letter for one of victims is September 10, 1971.

McGarrett sets up an elaborate police protective system using a large amount of HPD manpower around a young woman to capture her former boyfriend, a lifer, who has escaped from prison but all is not as it seems. William C. Watson and Beth Brickell guest star.

NOTE: Zulu (credited) does not appear in this episode.

A wealthy young widow is one of three victims (who become killers) in an intricate blackmail plot that leads to the murder of a Chicago mobster (Simon Oakland). When the only break in the case occurs, Danny fails to handcuff the arrested suspect which leads to the suspect's death. Loosely based on Sherlock Holmes' story The Red-Headed League.

In cooperation with NIS, Danny goes undercover to flush out a drug ring operating from a vessel in the U.S. Seventh Fleet. David Doyle guest stars.

McGarrett must stop an embittered, emotionally unstable ex-GI killer (who, because of a Section 8 discharge, cannot reenlist in the U.S. military), whose targets have been wives of Army officers who have come to Hawaii to meet their husbands on furlough. Alan Vint guest stars.