Last updated 24 March 2024


Part One

Series Episode Number: 558

World Premiere: Mon 18 Jan 1982 - 6:56pm GMT [BBC One: Not Wales] (United Kingdom)
First Broadcast: Sun 1 May 1983 - 11:00pm CDT [WTTW 11 Chicago]
Running Time: 23 minutes 36 seconds

8.40 Million (UK)


Chart Position: 66 () (UK)

Recorded on Mon 13 Apr 1981 in Television Centre 6



The arrival of the TARDIS is observed by three Urbankans via their manopticon devices. Intrigued, they begin dividing the Doctor's friends, and disguising themselves as humans