The Mind of Evil: Episode Four is an episode of Doctor Who starring Jon Pertwee, Roger Delgado, and Nicholas Courtney. With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.
Runtime: 50 minutes
Genre: Adventure, Drama, Family, Sci-Fi
Stars: Jon Pertwee, Roger Delgado, Nicholas Courtney, Katy Manning
Director: Timothy Combe, Don Houghton, Sydney Newman