Part Six
Series Episode Number: 505World Premiere: Sat 24 Feb 1979 - 6:29pm GMT [BBC One] (United Kingdom)
First Broadcast: Fri 1 Jun 2001 - 10:30pm CDT [Prairie Public Television]
Running Time: 25 minutes 9 seconds
9.60 Million (UK)
Appreciation Index: 66 (UK)Chart Position: 36 () (UK)
Recorded on Mon 04 Dec 1978 in Television Centre 3
The tragic truth of the sixth segment of the Key to Time is revealed and if the Black Guardian can control the Key, the whole of time and space will be plunged into eternal chaos.