Last updated 24 March 2024


Episode Five

Series Episode Number: 224

World Premiere: Sat 30 Nov 1968 - 5:15pm BST [BBC One] (United Kingdom)
Running Time: 23 minutes 25 seconds

6.70 Million (UK)

Appreciation Index: 52 (UK)

Chart Position: 67 () (UK)

Recorded on Fri 18 Oct 1968 in Lime Grove D
Archive State: 16mm t/r



The Doctor discovers that the Cybermen are planning to immobilise Earth's population by transmitting a hypnotic signal broadcast through International Electromatics products.


Production Team hide uncredited
WriterDerrick Sherwin
From a story byKit Pedler
DirectorDouglas Camfield
ProducerPeter Bryant
DesignerRichard Hunt
Script EditorTerrance Dicks
Incidental MusicDon Harper
Title MusicRon Grainer
and the BBC Radiophonic Workshop
Film CameramanAlan Jonas (uncredited)
Film Sound RecordistBill Chesneau (uncredited)
Film EditorMartyn Day (uncredited)
CostumesBobi Bartlett (uncredited)
Make-upSylvia James (uncredited)
SoundBryan Forgham (uncredited)
LightingRobbie Robinson (uncredited)
Visual EffectsBill King (uncredited)
Visual Effects Trading Post (uncredited)
Special SoundBrian Hodgson (uncredited)
Production AssistantChris D'Oyly-John (uncredited)
Vision MixerDavid Langford (uncredited)
Grams OperatorRon Arnett (uncredited)
Technical ManagerDon Babbage (uncredited)
Director's AssistantSue Sly (uncredited)
Assistant Floor ManagerSue Willis (uncredited)
Floor AssistantMichael Ward (uncredited)
Film Operations ManagerHugh Wilson (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)