21 October (releases)


 * 1967 - Episode four of The Abominable Snowmen was first broadcast on BBC1.
 * 1967 - Part three of TV Comic story The Coming of the Cybermen was first published.
 * 1972 - Part ten of The Ugrakks was first published in TV Action & Countdown.
 * 1978 - Part four of The Pirate Planet was first broadcast on BBC1.
 * 1989 - Part two of The Incredible Hulk Presents comic story Hunger from the Ends of Time was first published.
 * 1993 - Blood Heat was first published by Virgin Books.
 * 2010 - Doctor Who Adventures comic story Cell Shock was first published.
 * 2010 - Hell House was first published in TM 24.