Last updated 24 March 2024


Episode 2

Series Episode Number: 255

World Premiere: Sat 10 Jan 1970 - 5:15pm BST [BBC One] (United Kingdom)
First Broadcast: Sun 17 Sep 2017 - 4:30pm EDT [Retro TV]
Running Time: 24 minutes 21 seconds

8.10 Million (UK)


Chart Position: 57 () (UK)

Recorded in BBC Training Centre,
Archive State: 16mm Colou



A recovered Doctor escapes the hospital and joins UNIT in their investigation. Meanwhile, Channing directs one of his Auton servants to recover a meteorite.


Production Team hide uncredited
WriterRobert Holmes
DirectorDerek Martinus
ProducerDerrick Sherwin
DesignerPaul Allen
Script EditorTerrance Dicks
Film EditorWilliam Symon
Film EditorAdam Dawson
Sound RecordistDerek Medus
Film CameramanStan Speel
Film CameramanRobert McDonnell (uncredited)
CostumesChristine Rawlins
Make-upCynthia Goodwin
Special EffectsJohn Horton
Special SoundBrian Hodgson
and the BBC Radiophonic Workshop
Incidental MusicDudley Simpson
Title MusicRon Grainer
and the BBC Radiophonic Workshop
Assistant Floor ManagerLiam Foster (uncredited)
Production AssistantPeter Grimwade (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
Film Sound AssistantEddie Dougall (uncredited)
GripTex Childs (uncredited)
HairdresserIrene Walls (uncredited)
DresserArthur Funge (uncredited)