Doctor Who: Spearhead from Space (Part 1)

Notes & Trivia

 * This is the first episode to feature Jon Pertwee as the Third Doctor. He will continue on in the series for a total of 128 regular episodes as well as an uncredited appearance in "The Brain of Morbius (Part 4)" as well as a guest appearance in "The Five Doctors" in 1983. Pertwee's last regular series appearance is in "Planet of the Spiders (Part 6)".


 * First appearance of companion Liz Shaw, played by Caroline John. She will become a supporting cast member in four Doctor Who story-arcs in 1970 including "Spearhead from Space", "Doctor Who and the Silurians", "The Ambassadors of Death" and "Inferno". Like Jon Pertwee, Caroline John will also reprise the role of Liz Shaw for "The Five Doctors" in 1983.


 * First appearance of the Autons. The Autons will become recurring adversaries throughout the series as well as the 2005 Doctor Who revival series beginning with the pilot episode, "Rose".