Last updated 24 March 2024

Episode One

Series Episode Number: 232

World Premiere: Sat 25 Jan 1969 - 5:16pm BST [BBC One] (United Kingdom)
First Broadcast: Sun 9 Nov 1986 - 11:00pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 11 seconds

6.60 Million (UK)

Appreciation Index: 57 (UK)

Chart Position: 68 () (UK)

Recorded on Fri 03 Jan 1969 in Lime Grove D
Archive State: 16mm t/r

The TARDIS arrives on 21st Century Earth where all long distance journeys are made instantaneously by T-Mat. But aliens have invaded the T-Mat relay station on the Moon, and they're about to cause havoc...