The Mind of Evil: Episode Four
- Episode aired Feb 20, 1971
- TV-PG
- 25m
With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.