Last updated 09 January 2020

Part One

Series Episode Number: 488

World Premiere: Sat 28 Oct 1978 - 6:24pm BST [BBC One] (United Kingdom)
First Broadcast: Sun 6 Sep 1981 - 11:00pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 20 seconds

8.60 Million (UK)

Chart Position: 38 () (UK)

Recorded on Mon 03 Jul 1978 in Television Centre 3


The Doctor and Romana track the third segment of the Key to Time to the vicinity of an ancient stone circle on Earth. But sinister forces are at work and the stones hide a secret.

Production Team hide uncredited
WriterDavid Fisher
DirectorDarrol Blake
ProducerGraham Williams
DesignerJohn Stout
Script EditorAnthony Read
Costume DesignerRupert Jarvis
Make-up ArtistAnn Briggs
Visual Effects DesignerMat Irvine
Electronic EffectsA J Mitchell
Videotape EditorMalcolm Banthorpe
Studio LightingWarwick Fielding
Studio SoundRichard Chubb
OB LightingHubert Cartwright
OB SoundVic Godrich
Production AssistantCarolyn Montagu
Production Unit ManagerJohn Nathan-Turner
Incidental MusicDudley Simpson
Special SoundDick Mills
Title MusicRon Grainer (uncredited)
Assistant Floor ManagerCarol Scott (uncredited)
Floor AssistantPeter Leslie (uncredited)
Technical ManagerBob Warman (uncredited)Info
Vision MixerFred Law (uncredited)
Grams OperatorAndrew Hunter (uncredited)
Senior CameramanReg Poulter (uncredited)
Engineering ManagerBob Wade (uncredited)
OB CamermanTrevor Wimlett (uncredited)
OB CamermanMike Windsor (uncredited)
Title Music BBC Radiophonic Workshop (uncredited)
OB Scene Crew SupervisorBob Hare (uncredited)
Properties BuyerRobert Fleming (uncredited)
Design AssistantCassie Pusey (uncredited)
DresserAlice Gilbert (uncredited)
DresserLiz Penbroke (uncredited)
DresserAndre Salut (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
K9 created byBob Baker (uncredited)
K9 created byDave Martin (uncredited)