Last updated 09 January 2020

Part Three

Part Three

Series Episode Number: 642

World Premiere: Sat 20 Sep 1986 - 5:47pm BST [BBC One] (United Kingdom)
First Broadcast: Wed 10 Jun 2015 - 8:00pm EDT [Retro TV]
Running Time: 24 minutes 18 seconds

3.90 Million (UK)

Appreciation Index: 70 (UK)

Chart Position: 98 () (UK)

With the black light converter destroyed, the Doctor fears for the planet's safety and needs to find the Secrets of the Sleepers and discover why they are there.

Production Team hide uncredited
WriterRobert Holmes
DirectorNicholas Mallett
ProducerJohn Nathan-Turner
DesignerJohn Anderson
Script EditorEric Saward
Title SequenceSid Sutton
Costume DesignerKen Trew
Make-up DesignerDenise Baron
Studio LightingMike Jefferies
Studio SoundBrian Clark
Technical CoordinatorAlan Arbuthnott
Studio Camera SupervisorAlec Wheal
Videotape EditorStephen Newnham
Visual Effects DesignerMike Kelt
Video EffectsDanny Popkin
Vision MixerJim Stephens
OB LightingJohn Wiggins
OB SoundBill Whiston
Production ManagerClare Graham
Production AssociateAngela Smith
Production AssistantJoy Sinclair
Assistant Floor ManagerStephen Jeffery-Poulter
Title MusicRon Grainer
Incidental MusicDominic Glynn
Special SoundDick Mills
Title Music ArrangerDominic Glynn (uncredited)
Title SequenceTerry Handley (uncredited)
Visual Effects AssistantMike Ellis (uncredited)