Part OneSeries Episode Number: 422
World Premiere: Sat 31 Jan 1976 - 6:00pm GMT [BBC One] (United Kingdom)
First Broadcast: Wed 23 Apr 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 10 seconds
11.40 Million (UK)Appreciation Index: 59 (UK)
Chart Position: 16 () (UK)
Recorded on Mon 17 Nov 1975 in TC4
Learning of an alien seed pod at the Antarctic, the Doctor and Sarah investigate. But they are too late. A man is already turning into a Krynoid.