Casts
Tom Baker
as The Doctor
Elisabeth Sladen
as Sarah Jane Smith
Ian Marter
as Harry Sullivan
Nicholas Courtney
as Brigadier Lethbridge-Stewart
John Levene
as RSM Benton
Patricia Maynard
as Miss Winters
Michael Kilgarriff
as The Robot
Edward Burnham
as Professor Kettlewell
Jon Pertwee
as The Doctor
