Last updated 09 January 2020


Part One

Series Episode Number: 440

World Premiere: Sat 1 Jan 1977 - 6:22pm GMT [BBC One] (United Kingdom)
First Broadcast: Wed 21 May 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 58 seconds

10.70 Million (UK)

Appreciation Index: 61 (UK)

Chart Position: 23 () (UK)

Recorded on Mon 20 Sep 1976 in TC3
BBC Genome Project: see entry

Episode listing on BBC website


The Doctor arrives on an alien world and is taken captive by the savage Sevateem tribe. Accused of being 'the evil one', the Doctor begins to suspect that he has been here before.


Production Team hide uncredited
WriterChris Boucher
DirectorPennant Roberts
ProducerPhilip Hinchcliffe
DesignerAustin Ruddy
Script EditorRobert Holmes
Costume DesignerJohn Bloomfield
Make-up ArtistAnn Ailes
Visual Effects DesignerMat Irvine
Special SoundDick Mills
Film CameramanJohn McGlashan
Film RecordistStan Nightingale
Film EditorPam Bosworth
LightingDerek Slee
SoundColin Dixon
Title SequenceBernard Lodge
Production AssistantMarion McDougall
Production Unit ManagerChris D'Oyly-John
Incidental MusicDudley Simpson
Title MusicRon Grainer
and the BBC Radiophonic Workshop
Assistant Floor ManagerLinda Graeme (uncredited)
Vision MixerNick Lake (uncredited)Info
Grams OperatorGordon Phillipson (uncredited)
TM2Ron Bristow (uncredited)
Floor AssistantEllen Grech (uncredited)Info
Inlay OperatorDave Chapman (uncredited)
Senior CameramanColin Reed (uncredited)
Director's AssistantSue Ward (uncredited)
Props BuyerBrenda Barker (uncredited)
Props BuyerVal Woodford (uncredited)
Post-Production GramsMike Felton (uncredited)
Post-Production GramsR. Williams (uncredited)
Post Production SoundDerek Miller-Timmins (uncredited)
Make-Up AssistantJennifer Hughes (uncredited)
Make-Up AssistantSue Frear (uncredited)
Make-Up AssistantKaren Bryan (uncredited)
Make-Up AssistantCarol Wilson (uncredited)
Production SecretaryAnn Rickard (uncredited)
Artist BookingNansi Davies (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)