The Doctor, along with Susan, Ian, and Barbara, are recruited to find the keys to the Conscience of Marinus, a machine that has the capability to destroy the evil Voords from taking over the planet. Can the Doctor find the keys in time to save the planet Marinus? Where have the keys been hidden? What kind of backwards laws are used on this planet? Find out in the newest episode of The Doctor’s Companion! And remember, BEWARE OF SPOILERS!!
Next: Jon Pertwee and “The Time Monster”!!