Doctor Who: Planet of the Spiders (Part 1)

"Planet of the Spiders (Part 1)" is the twenty-first episode of season eleven of the British science fiction television series Doctor Who and the 359th episode of the series overall. It is the fourth and final installment in "The Time Warrior" serial. It was directed by Alan Bromly and written by Robert Holmes. It was produced by Barry Letts and first aired on BBC One on May 4th, 1974.