Fishes of the world (John Player & Sons)
Directed by Brian Clemens. Hammer Films. Horst Janson, John Cater, Caroline Munro.
https://en.wikipedia.org/wiki/Captain_Kronos_%E2%80%93_Vampire_Hunter
http://www.1000misspenthours.com/reviews/reviewsa-d/captainkronosvampirehunter.htm
http://every70smovie.blogspot.com/2013/07/captain-kronosvampire-hunter-1974.html
https://www.dvdtalk.com/reviews/8058/captain-kronos-vampire-hunter/
https://www.thespinningimage.co.uk/cultfilms/displaycultfilm.asp?reviewid=546
Fox 1993-2002. I have this on DVD and most of the original run on VHS.
https://en.wikipedia.org/wiki/The_X-Files
1979-81 NBC. Gil Gerard, Erin Gray. 37 episodes.
https://en.wikipedia.org/wiki/Buck_Rogers_in_the_25th_Century_(TV_series)
1978-79 ABC. 24 episodes. Followed by Galactica 1980. 10 episodes.
https://en.wikipedia.org/wiki/Battlestar_Galactica_(1978_TV_series)
1989-96 HBO, Fox, and syndicated. Watching now new on Tubi.
https://en.wikipedia.org/wiki/Tales_from_the_Crypt_(TV_series)