The Mind of Evil (1)
Run Time: 25 mins
Air Date: Sat, 30 Jan 1971
Average Rating: ⭐ 7.5 (6 votes)
BBC One BBC TelevisionSeason 8 - Episode 5
Average Rating: ⭐ 7.5 (6)
The Doctor and Jo head to Stangmoor Prison to investigate the Keller Machine, which drains the evil impulses from prisoners' minds, while UNIT are handling security at the first world peace conference.