Episode 6
Series Episode Number: 277World Premiere: Sat 13 Jun 1970 - 5:26pm BST [BBC One] (United Kingdom)
First Broadcast: Wed 5 Nov 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 32 seconds
6.70 Million (UK)
Appreciation Index: 58 (UK)Chart Position: 73 () (UK)
Recorded on Fri 22 May 1970 in TC3 / TC6
Archive State: RSC conver
As Earth in the parallel world faces destruction, the Doctor is desperate to return to his world to warn it of the danger. But time is running out.
Home Region: