Back up to: Season 13
4/4 The Doctor challenges Morbius to a terrifying mental duel which will lead to death!
3/4 Morbius demands that Solon install his brain in a new body.
2/4 The Doctor is a prisoner of the Sisterhood of Karn who intend to burn him at the stake.
1/4 The Doctor and Sarah shelter in the castle of Dr Solon. But he hides a secret...