Part FourSeries Episode Number: 421
World Premiere: Sat 24 Jan 1976 - 5:55pm GMT [BBC One] (United Kingdom)
First Broadcast: Tue 22 Apr 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 18 seconds
10.20 Million (UK)
Chart Position: 28 () (UK)
Recorded on Tue 21 Oct 1975 in TC3
Morbius, housed in a gruesome new body, breathes and moves once more! The Doctor is forced to challenge him to a terrifying mental duel which will lead to death!