Planet of the Spiders

074 – *Planet of the Spiders*
074 – Planet of the Spiders
Doctor Who serial
Cast
	Doctor Jon Pertwee – Third Doctor;
	Companion Elisabeth Sladen – Sarah Jane Smith;
	Others Nicholas Courtney – Brigadier Lethbridge-Stewart; Richard Franklin – Mike Yates; John Levene – Sergeant Benton; John Dearth – Lupton; Carl Forgione – Land; Andrew Staines – Keaver; Terence Lodge – Moss; Christopher Burgess – Barnes; John Kane – Tommy; Kevin Lindsay – Cho-je; George Cormack – K'anpo; Cyril Shaps – Professor Clegg; Chubby Oates – Policeman; Pat Gorman – Soldier; Terry Walsh – Man with Boat; Michael Pinder – Hopkins; Stuart Fell – Tramp; Geoffrey Morris – Sabor; Ralph Arliss – Tuar; Gareth Hunt – Arak; Jenny Laird – Neska; Joanna Monro – Rega; Walter Randall, Max Faulkner – Guard Captains; Ysanne Churchman, Kismet Delgado, Maureen Morris – Spider Voices;
Production
Directed by	Barry Letts
Written by	Robert Sloman; Barry Letts (uncredited)
Script editor	Terrance Dicks
Produced by	Barry Letts (uncredited)
Music by	Dudley Simpson
Production code	ZZZ
Series	Season 11
Running time	6 episodes, 25 minutes each
First broadcast	4 May 1974
Last broadcast	8 June 1974
Chronology
← Preceded by; The Monster of Peladon	Followed by →; Robot
	List of episodes (1963–1989)

Planet of the Spiders is the fifth and final serial of the 11th season of the British science fiction television series Doctor Who, which was first broadcast in six weekly parts on BBC1 from 4 May to 8 June 1974. It was Jon Pertwee's final regular appearance as the Third Doctor, the last regular appearance of Mike Yates, and marks the first, uncredited appearance of Tom Baker as the Fourth Doctor. This serial introduces the term "regenerate" to explain the Doctor's transformation into another appearance. It also contains the first mention in the series of future companion Harry Sullivan.

In this serial, a group of men at a Tibetan monastery in rural England make contact with a race of giant spiders with psychic abilities from the planet Metebelis 3, who intend to conquer Earth.