The 35th episode of the syndicated science fiction Science Fiction Theatre airs on stations across the U.S. Hosted by Truman Bradley, the episode stars Bill Williams and Doris Dowling.
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The 142nd episode of Doctor Who airs on the BBC. The second Doctor’s longest-running companion, Jamie McCrimmon, is introduced in this story. This episode is now missing from the BBC’s archives.
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ITV broadcasts the 13th episode of The Prisoner, produced, occasionally written by, and starring Patrick McGoohan. Clifford Evans guest stars as Number Two. 
Broadcasting live black & white television pictures from lunar orbit on Christmas Eve, the crew of Apollo 8 delivers one of the most-watched broadcasts of 1968. As the surface of the moon rolls silently outside the windows of their command/service module, the astronauts take turns reading the first chapter of Genesis, dedicating it to “all of you on the good Earth.” After ten orbits of the moon, Apollo 8 fires its engine, putting it on a return trajectory to Earth; it splashes down safely three days later.
This mission is dramatized in the 1968 episode of HBO’s 1998 series From The Earth To The Moon.
NBC airs the 39th episode of Night Gallery, an anthology series of original short plays and short story adaptations hosted by Rod Serling. Leonard Nimoy (Star Trek) guest stars.
The seventh episode of the British comedy series Robert’s Robots airs on ITV licensee Thames Television, starring John Clive (A Clockwork Orange, Yellow Submarine) as eccentric inventor Robert Sommerby and Nigel Pegram as one of his robot creations. This concludes the series’ first season; a second season will air in late 1974.
The seventh episode of Douglas Adams’ breakthrough radio science fiction comedy series The Hitchhiker’s Guide To The Galaxy is first broadcast on BBC Radio, initiating the second series of the now-hit cult science fiction phenomenon, the rest of which won’t be broadcast until the following month. This episode serves as a kind of Hitchhiker’s holiday special as a result. (Some elements of the second radio series will go on to form the basis of Adams’ novel The Restaurant At The End Of The Universe.)
The 49th episode of a revival of Rod Serling’s The Twilight Zone airs in syndication. Bud Cort stars.
This series is not fully chronicled in the LogBook. You could join theLogBook team and write this guide or support the webmaster’s efforts to expand the site.
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The Twilight Zone now streaming on Paramount Plus
The 34th episode of the horror anthology series Freddy’s Nightmares is broadcast in syndication in North America, hosted by Robert Englund in character as Freddy Krueger.
This series is not yet chronicled in the LogBook. You could join theLogBook team and write this guide or support the webmaster’s efforts to expand the site.
BBC3 airs the 11th episode of Russell T. Davies’ science fiction series Torchwood, a more adult-themed spinoff of Doctor Who. This episode is written by writer and actor Noel Clarke (Doctor Who, Star Trek Into Darkness), better known as TARDIS traveler Mickey Smith.
Streaming service Amazon Prime releases the 59th episode of the science fiction series The Expanse, based on the series of novels by James S.A. Corey (a pseudonym for writers Ty Franck and Daniel Abraham). Elizabeth Mitchell (Lost, V) guest stars.