Doctor Doctor Who Guide

Last updated 09 January 2020


Episode Four

Episode Four

Series Episode Number: 223

World Premiere: Sat 23 Nov 1968 - 5:14pm BST [BBC One] (United Kingdom)
Running Time: 24 minutes 18 seconds

6.40 Million (UK)

Appreciation Index: 51 (UK)

Chart Position: 73 () (UK)

Recorded on Fri 11 Oct 1968 in Lime Grove D
Archive State: Missing



Trapped by Vaughn's men at International Electromatics, the Doctor requests help from the Brigadier and UNIT, the United Nations Intelligence Taskforce.

A UFO is delivering cocoons to the electronics firm – but what is inside them?


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)
LightingRobbie Robinson (uncredited)
SoundAlan Edmonds (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)