Gemini Man: Smithereens
NBC airs the first episode of Gemini Man, starring Ben Murphy and Katherine Crawford; William Sylvester takes over Richard Dysart’s role from the pilot movie, and Andrew Prine and country music artist Jim Stafford guest star. This episode becomes infamous for a later appearance on Mystery Science Theater 3000. 
Star Maidens: The Proton Storm
The fourth episode of the British-German science fiction series Star Maidens premieres on ITV in the UK.
The Bionic Woman: The Return Of Bigfoot Part 2
The 15th episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Lee Majors and Martin E. Brooks appear as their characters from The Six Million Dollar Man in the second season premiere, which is also a heavily promoted crossover event, part one of which was the season premiere of The Six Million Dollar Man. John Saxon, Ted Cassidy, Sandy Duncan, and Stefanie Powers guest star.
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Six Million Dollar Man: The Return Of Bigfoot Part 1
The 58th episode of The Six Million Dollar Man is broadcast on ABC, starring Lee Majors and Richard Anderson. Lindsay Wagner, John Saxon, Sandy Duncan, Stefanie Powers, and Ted Cassidy guest star in the fourth season prmiere, whose story will be concluded on The Bionic Woman.
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Electra Woman & Dyna Girl: Sorcerer’s Golden Trick, Part 2
ABC airs the second episode of Electra Woman & Dyna Girl, part of the Krofft Supershow Saturday morning children’s programming block. This is part two of a two-part story, each episode lasting only around 12 minutes.
Ark II: The Slaves
CBS airs the second episode of Filmation’s live-action Saturday morning science fiction series Ark II.
Shazam!: Bitter Herbs
The 24th episode of Filmation’s live-action Shazam! series airs on CBS, starring John Davey, Michael Gray and Les Tremayne. Linden Chiles and James Van Pattern guest star.
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Shazam! now streaming on Amazon Prime
Monster Squad: Mr. Mephisto
NBC airs the second episode of Monster Squad, a live-action Saturday morning comedy starring Fred Grandy.
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Doctor Who: Masque Of Mandragora, Part 3
The 430th episode of Doctor Who airs on BBC1. Gareth Armstrong and Tim Piggott-Smith guest star.
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First Star Trek movie announced
Having tried to find a suitable script for a big-screen relaunch of Star Trek virtually since the cancellation of the television series, Paramount – riding the coattails of the much-publicized unveiling of the Space Shuttle Enterprise – issues a press release announcing that the first Trek movie is finally underway – in this case, a still-in-development script called Star Trek: Planet Of Titans, featuring a radically redesigned Enterprise concept by illustrator Ralph McQuarrie, whose other recent genre work – designs for the yet-to-be-released Star Wars – has yet to make him a household name.
Star Maidens: Nightmare Cannon
The third episode of the British-German science fiction series Star Maidens premieres on ITV in the UK.
Electra Woman & Dyna Girl: Sorcerer’s Golden Trick, Part 1
ABC premieres the first episode of Electra Woman & Dyna Girl, part of the Krofft Supershow Saturday morning children’s programming block. This is part one of a two-part story, each episode lasting only around 12 minutes.
Ark II: The Flies
CBS airs the first episode of its Saturday morning science fiction series Ark II. Jonathan Harris (Lost In Space) guest stars.
Shazam!: The Contest
The 23rd episode of Filmation’s live-action Shazam! series airs on CBS, starring John Davey, Michael Gray and Les Tremayne. William Campbell (Star Trek) guest stars in the third season premiere.
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Shazam! now streaming on Amazon Prime
Monster Squad: Queen Bee
NBC premieres the first episode of Monster Squad, a live-action Saturday morning comedy series imagining Dracula, Frankenstein, and the Wolfman as a crime-fighting team led by Walter (Fred Grandy, a year before he would set sail on The Love Boat). (Though similar in concept, the series is unrelated to the late theatrical movie of the same name.)
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Doctor Who: Masque Of Mandragora, Part 2
The 429th episode of Doctor Who airs on BBC1. Gareth Armstrong and Tim Piggott-Smith guest star.
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Star Maidens: Nemesis
The second episode of the British-German science fiction series Star Maidens premieres on ITV in the UK. The show stars Gareth Thomas and Judy Geeson, and involves male slaves who escape from the female-dominated society of planet Medusa to take shelter on Earth.
Doctor Who: Masque Of Mandragora, Part 1
The 428th episode of Doctor Who airs on BBC1. Gareth Armstrong and Tim Piggott-Smith guest star. This episode is the beginning of Doctor Who’s 14th season on the air.
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Star Maidens: Escape To Paradise
The first episode of the British-German science fiction series Star Maidens premieres on ITV in the UK. The show stars Gareth Thomas and Judy Geeson, and involves male slaves who escape from the female-dominated society of planet Medusa to take shelter on Earth.
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Hear about it on the Sci-Fi 5 podcast
The Bionic Woman: The Ghosthunter
The 14th episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Kristy McNichol (Family) guest stars in the final episode of the first season.
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The Bionic Woman: Mirror Image
The 13th episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Herbert Jefferson Jr. (Battlestar Galactica) and Terry Kiser (Weekend At Bernie’s) guest star.
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The Bionic Woman: The Jailing Of Jaime
The 12th episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Anne Schedeen (Alf) and Skip Homeier guest star.
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Gemini Man: Pilot
NBC premieres the pilot movie Gemini Man, a retooling of the concept of The Invisible Man series the network cancelled earlier in the year. The movie stars Ben Murphy, Katherine Crawford, and Richard Dysart (L.A. Law). A very brief series will premiere as part of NBC’s fall season.
The Bionic Woman: Fly Jaime
The 11th episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Christopher Stone, Spencer Milligan (Land Of The Lost), and Martin E. Brooks (The Six Million Dollar Man) guest star.
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Future Cop: Cleaver & Haven
The TV movie-of-the-week Future Cop airs on ABC, starring Ernest Borgnine (McHale’s Navy), Michael J. Shannon, and John Amos (Good Times), involving a veteran LAPD cop who is assigned a rookie trainee who turns out to be an android. The movie achieves a high enough rating to return as a short-lived series in 1977, though the show will also become the subject of a lawsuit over its premise.
Wonder Woman: The Nazi Wonder Woman
The second of two one-hour Wonder Woman specials airs on ABC, starring Lynda Carter and Lyle Waggoner. Lynda Day George (Mission: Impossible) guest stars. Weekly hour-long episodes begin later in the year.
Wonder Woman Meets Baroness von Gunther
The first of two one-hour Wonder Woman specials airs on ABC, starring Lynda Carter and Lyle Waggoner. Christine Belford guest stars.
The Bionic Woman: Canyon Of Death
The tenth episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Gary Collins (The Sixth Sense) guest stars.
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The Bionic Woman: Winning Is Everything
The ninth episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC.
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The Bionic Woman: Jaime’s Mother
The eighth episode of The Bionic Woman, starring Lindsay Wagner and Richard Anderson, airs on ABC. Barbara Rush guest stars.
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