Last updated 24 March 2024


Part Four

Series Episode Number: 447

World Premiere: Sat 19 Feb 1977 - 6:25pm GMT [BBC One] (United Kingdom)
First Broadcast: Fri 30 May 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 23 minutes 42 seconds

12.60 Million (UK)

Appreciation Index: 57 (UK)

Chart Position: 18 () (UK)

Recorded on Tue 07 Dec 1976 in TC8



As Taren Capel reveals himself and his army of killer robots close in, the Doctor and Leela join forces with the surviving crew members to defend themselves.


Production Team hide uncredited
WriterChris Boucher
DirectorMichael E Briant
ProducerPhilip Hinchcliffe
DesignerKenneth Sharp
Script EditorRobert Holmes
Costume DesignerElizabeth Waller
Make-up ArtistAnn Briggs
Visual Effects DesignerRichard Conway
Special SoundDick Mills
LightingDuncan Brown
SoundTony Millier
Title SequenceBernard Lodge
Production AssistantPeter Grimwade
Production Unit ManagerChris D'Oyly-John
Incidental MusicDudley Simpson
Title MusicRon Grainer
and the BBC Radiophonic Workshop
Assistant Floor ManagerDavid Tilley (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Technical ManagerRichard Ashman (uncredited)
Vision MixerJoan Duncan (uncredited)
Grams OperatorNeil Sadwick (uncredited)
Floor AssistantTony Vanden Ende (uncredited)
Electronic EffectsA J Mitchell (uncredited)
Director's AssistantMargaret Lewty (uncredited)
Make-Up AssistantJudith Dalton (uncredited)
Make-Up AssistantAnne Spiers (uncredited)
Make-Up AssistantHeather Squires (uncredited)
Scenic Props BuyerRuth Hyde (uncredited)
Artist BookingNansi Davis (uncredited)
Post Production SoundR. Partridge (uncredited)
Post Production SoundAdrian Bishop-Lagget (uncredited)
Visual Effects AssistantChris Lawson (uncredited)
Visual Effects AssistantTony Harding (uncredited)
Production SecretaryAnn Rickard (uncredited)
Film CameramanPeter Chapman