Last updated 24 March 2024


Episode Four

Series Episode Number: 509

World Premiere: Sat 22 Sep 1979 - 6:17pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 29 Jun 2001 - 10:30pm CDT [Prairie Public Television]
Running Time: 26 minutes 5 seconds

14.40 Million (UK)

Appreciation Index: 64 (UK)

Chart Position: 27 () (UK)

Recorded on Mon 16 Jul 1979 in Television Centre 1



The Doctor discovers that the Daleks need Davros to break the stalemate in their war with the Movellans, and the Movellans now want the Doctor to fulfil the same purpose for them.


Production Team hide uncredited
WriterTerry Nation
DirectorKen Grieve
ProducerGraham Williams
DesignerKen Ledsham
Design AssistantRob Harris (uncredited)
Script EditorDouglas Adams
Costume DesignerJune Hudson
Make-up ArtistCecile Hay-Arthur
Make-Up AssistantMargaret McGreen (uncredited)
Make-Up AssistantSusan O'Mahony (uncredited)
Make-Up AssistantCatherine Whitfield (uncredited)
Make-Up AssistantLesley Bond (uncredited)
Make-Up AssistantCaroline Becker (uncredited)
Visual Effects DesignerPeter Logan
Visual Effects AssistantKen Bomphray (uncredited)
Visual Effects AssistantSteve Lucas (uncredited)
Visual Effects AssistantBarbara Horne (uncredited)
Electronic EffectsDave Jervis
Vision MixerNigel Finnis
Video-tape EditorAlan Goddard
K9 OperatorSteve Cambden (uncredited)
Studio LightingJohn Dixon
Studio SoundClive Gifford
Grams OperatorGordon Phillipson (uncredited)Info
Technical ManagerJohn Dean
Show Working SupervisorChick Hetherington (uncredited)
Senior CameramanAlec Wheal
Film CameramanPhil Law
Film CameramanKevin Rowley
Title Music BBC Radiophonic Workshop (uncredited)
SteadycamFred Hamilton
Film RecordistGraham Bedwell
Film Camera AssistantRoger Twyman (uncredited)
Lighting GafferMonty Smart (uncredited)
GripsIan McNally (uncredited)
Film Op ChargehandJohn Richardson (uncredited)
Film EditorDick Allen
Production AssistantHenry Foster
Production Unit ManagerJohn Nathan-Turner
Director's AssistantRoz Berrystone
Assistant Floor ManagerDavid TilleyInfo
Assistant Floor ManagerAntony Root (uncredited)Info
Floor AssistantBarbara Jones (uncredited)Info
Incidental MusicDudley Simpson
Special SoundDick Mills
Title MusicRon Grainer (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)