Jon Pertwee
The Doctor
Caroline John
Liz Shaw
Nicholas Courtney
Brigadier Lethbridge-Stewart
Fulton Mackay
Dr. Quinn
Norman Jones
Major Baker
Peter Miles
Dr. Lawrence
Thomasine Heiner
Miss Dawson
John Newman
Spencer
Geoffrey Palmer
Masters
Timothy Combe
Director
Barry Letts
Producer
Carey Blyton
Original Music Composer
Delia Derbyshire
Theme Song Performance
Terrance Dicks
Script Editor
Malcolm Hulke
Writer
