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24 Episodes 1975 - 1976
Episode 1
Fri, Sep 12, 1975 60 mins
Part 1 of two. McGarrett, on active duty with the Naval Reserve, investigates the letter-bomb murder of an intelligence officer. Wo Fat: Khigh Dhiegh. Wallace: Harry Guardino. Waldron: David Birney. Marcia Bissell: Donna Mills. Danny: James MacArthur. Captain Newhouse: Lloyd Bochner.
Episode 2
Fri, Sep 12, 1975 60 mins
Conclusion of a story about a Naval Intelligence officer's murder engineered by McGarrett's criminal nemesis Wo Fat. McGarrett: Jack Lord. Wallace: Harry Guardino. Waldron: David Birney. Marcia Bissell: Donna Mills. Sam Bissell: Biff McGuire. Danny: James McArthur.
Episode 3
Fri, Sep 19, 1975 60 mins
The crash of a police airplane leaves an injured McGarrett to look after his uninjured prisoner. McGarrett: Jack Lord. Demarest: Jack Hogan.
Episode 4
Fri, Sep 26, 1975 60 mins
McGarrett and an uncooperative British Intelligence agent search for a missing nobleman suspected of murder and treason. McGarrett: Jack Lord. Lord Danby: Murray Matheson. Lady Danby: Juliet Mills. Danny: James MacArthur.
Episode 5
Fri, Oct 3, 1975 60 mins
A syndicate courier is on the run from both Vegas hit men and the law. McGarrett: Jack Lord. Jeff: Marc Singer. Hatch: Andrew Prine. Bradshaw: Brendan Burns. Danny: James MacArthur.
Episode 6
Fri, Oct 10, 1975 60 mins
Surface-to-air missiles are being smuggled into Hawaii. McGarrett: Jack Lord. Thorncrest: John Colicos. Danny: James MacArthur. Ambok/Blake: George Takei. Masters: Lou Frizzell.
Episode 7
Fri, Oct 17, 1975 60 mins
Convicts try their hostage McGarrett for murder. Honore Vashon: Harold Gould. Tasai: R.B. Sorko-Ram. Sato: Seth Sakai. Danny: James MacArthur.
Episode 8
Fri, Oct 24, 1975 60 mins
A physicist demands political asylum and immunity from prosecution for a colleague who defected from a Far Eastern country and killed a man upon arriving in Hawaii. Ormsbee: Pat Hingle. McGarrett: Jack Lord. Chaing Lee: Soon-Teck Oh.
Episode 9
Fri, Oct 31, 1975 60 mins
A terrified singer attempts to hide the fact that she saw a racketeer murder a party guest. McGarrett: Jack Lord. MacDougall: Shelly Novack. Danny: James MacArthur.
Episode 10
Fri, Nov 7, 1975 60 mins
Helen Hayes joins son James MacArthur in a story about murder at a retirement home. Havens: Charles Durning. Ellen: Lynne Ellen Hollinger. McGarrett: Jack Lord. Miller: Ian Wolfe.
Episode 11
Fri, Nov 14, 1975 60 mins
A high-school vice principal moonlights as a narcotics smuggler. McGarrett: Jack Lord. Orduno: Nephi Hannemann. Scott: Darby Hinton. Nani: Lei Kayahara. Danny: James MacArthur.
Episode 12
Fri, Nov 21, 1975 60 mins
An angry warehouse owner berates Five-O for failing to stem a wave of waterfront burglaries. McGarrett: Jack Lord. Tommy: Richard Hatch. Elena: Kathy Beller. Danny: James MacArthur.
Episode 13
Fri, Nov 28, 1975 60 mins
A case is reopened after a writer finds a missing heir's remains in an unmarked grave. McGarrett: Jack Lord. Agatha Henderson: Eileen Heckart. Marshall: James Olson. Maru: Elissa Hoopai.
Episode 14
Thu, Dec 4, 1975 60 mins
A senator's son is involved in a rape that results in a stabbing. McGarrett: Jack Lord. Avery: Richard Masur. Scofield: Adam Arkin. Hughes: Lance Hool. Lani: Beverly Kushida. Zimmerman: Michael Collins.
Episode 15
Thu, Dec 11, 1975 60 mins
An art connoisseur implicates McGarrett in an art-smuggling operation. Lupin: Richard McKenzie. Danny: James MacArthur. Prof. Masaaki: John Fujioka. Suzari: Kwan Hi Lim.
Episode 16
Thu, Dec 18, 1975 60 mins
A lethal quantity of nerve gas is stolen by a deranged research assistant (Kario Salem). McGarrett: Jack Lord. Danny: James MacArthur. Chin Ho: Kam Fong.
Episode 17
Thu, Jan 1, 1976 60 mins
Five-O probes the murder of a Japanese-American importer reputed to have hidden a fortune in gold bullion at the time of the Pearl Harbor attack. Blackwell: Lew Ayres. McGarrett: Jack Lord. Tahashi: Mako.
Episode 18
Thu, Jan 8, 1976 60 mins
A racketeer's right-hand man makes a conditional offer to testify against his boss in a trial. Billy Madrid: Henry Darrow. McGarrett: Jack Lord. Sandi Wells: Amanda McBroom. Kum Chi: Jimmy Borges.
Episode 19
Thu, Jan 15, 1976 60 mins
Five-O zeroes in on a contractor and a building inspector responsible for a deadly fire. Maynard: Allan Arbus. Rogers: Robert Hogan. McGarrett: Jack Lord. Harris: John Karlen.
Episode 20
Thu, Jan 29, 1976 60 mins
A hang-glider pilot witnesses the murder of an airline stewardess by two car-strippers (Chuck Akamine, Billy Roessler). Oscar: Kenneth O'Brien. McGarrett: Jack Lord. Draper: Lou Richards.
Episode 21
Thu, Feb 5, 1976 60 mins
Five-O investigates a home for delinquents to solve a series of robberies from gold-supply houses. Pakoa: Rudy Ramos. McGarrett: Jack Lord. Elizabeth Rollins: Barbara Baxley. Ross: Tommy Sands.
Episode 22
Thu, Feb 12, 1976 60 mins
A Japanese industrialist's son is hidden in a capsule containing only a 52-hour oxygen supply. Asuko: Suesie Elene. Colburn: Bruce Boxleitner. Dr. Tolvar: Liam Sullivan.
Episode 23
Thu, Feb 26, 1976 60 mins
A militant ecologist is framed for the kidnapping of a land developer's wife. Jack Lord. Rhoads: David Huddleston. Molony: Dennis Redfield. Wingfield: James Karen. Julie: Janit Baldwin.
Episode 24
Thu, Mar 4, 1976 60 mins
Hawaii is infested with borer-moth larvae that could destroy the entire sugar crop. McGarrett: Jack Lord. Patton: Richard Kiley. Kate Holbrook: Carol Vogel. Chadwick: Paul Shenar.