Last updated 29 March 2020

Episode One

Episode One

Series Episode Number: 293

World Premiere: Sat 10 Apr 1971 - 6:11pm BST [BBC One] (United Kingdom)
First Broadcast: Mon 1 Dec 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 19 seconds

7.60 Million (UK)

Chart Position: 41 () (UK)

Recorded on Fri 05 Mar 1971 in TC4
Archive State: RSC conver

The TARDIS takes the Doctor and Jo to a barren world in the far future where human colonists are scratching a living. But at night, the colonists are menaced by a monster.