Last updated 24 March 2024


Part Two

Series Episode Number: 577

World Premiere: Tue 23 Mar 1982 - 7:05pm GMT [BBC One: Not Wales] (United Kingdom)
First Broadcast: Tue 21 Apr 2015 - 8:30pm EDT [Retro TV]
Running Time: 23 minutes 58 seconds

8.50 Million (UK)


Chart Position: 48 () (UK)

Recorded on Wed 20 Jan 1982 in Television Centre 8



After an encounter with the Plasmatons, Nyssa is possessed by strange aliens while the Doctor, joined by Professor Hayter, investigates Kalid's inner sanctum.


Production Team hide uncredited
WriterPeter Grimwade
DirectorRon Jones
ProducerJohn Nathan-Turner
DesignerRichard McManan-Smith
Script EditorEric Saward
Title SequenceSid Sutton
Costume DesignerAmy Roberts
Make-up DesignerDorka Nieradzik
Studio LightingEric Wallis
Studio SoundMartin Ridout
Vision MixerNigel Finnis
Videotape EditorRod Waldron
Technical ManagerPeter Granger
Senior CameramanAlec Wheal
Visual Effects DesignerPeter Logan
Video EffectsDave Chapman
Production ManagerLiz Mace
Production AssociateAngela Smith
Production AssistantJoan Elliott
Assistant Floor ManagerLynn Richards
Incidental MusicRoger Limb
Special SoundDick Mills
Grams OperatorTony Revell (uncredited)
Studio EngineerPhil Irons (uncredited)
Studio EngineerChris Nickolls (uncredited)
Floor AssistantCharles Beeson (uncredited)
Show Working SupervisorBill Lovely (uncredited)
Lighting ChargehandNorman Fuggles (uncredited)
Lighting ChargehandTed Gogarty (uncredited)
Visual Effects AssistantGeorge Reed (uncredited)
GraphicsIan Hewett (uncredited)
BookerSarah Bird (uncredited)
Booking AssistantSheila Hodges (uncredited)
Props BuyerAlan Huxley (uncredited)
Design AssistantDerek Evans (uncredited)
Make-Up AssistantWendy Freeman (uncredited)
Production SecretaryJane Judge (uncredited)
DresserMervin Bezar (uncredited)
DresserRobin Smith (uncredited)
DresserHeather Williams (uncredited)
Title MusicRon Grainer (uncredited)
Title Music ArrangerPeter Howell (uncredited)
Nyssa created byJohnny Byrne (uncredited)