Last updated 24 March 2024


Episode Two

Series Episode Number: 305

World Premiere: Sat 8 Jan 1972 - 5:53pm GMT [BBC One] (United Kingdom)
First Broadcast: Wed 8 Oct 1975 - 6:30pm CDT [WTTW 11 Chicago]
Running Time: 23 minutes 52 seconds

10.40 Million (UK)


Chart Position: 29 () (UK)

Recorded on Tue 05 Oct 1971 in TC4
Archive State: PAL 2 VT



A captive of the guerrillas, the Doctor discovers they intend to change history. Jo is transported to the 22nd Century where she unwittingly gives vital information to the Daleks.


Production Team hide uncredited
WriterLouis Marks
DirectorPaul Bernard
ProducerBarry Letts
DesignerDavid Myerscough-Jones
Script EditorTerrance Dicks
Studio LightingAlan Horne
Studio SoundTony Millier
CostumesMary Husband
Make-upHeather Stewart
Visual Effects DesignerJim Ward
Film CameramanFred Hamilton
Film EditorDan Rae
Special SoundBrian Hodgson
Incidental MusicDudley Simpson
Daleks originated byTerry Nation
Title MusicRon Grainer
and BBC Radiophonic Workshop
Production AssistantNorman Stewart (uncredited)
Technical ManagerDerek Martin (uncredited)
Vision MixerMike Catherwood (uncredited)
Assistant Floor ManagerSue Hedden (uncredited)
Floor AssistantJohn O'Shaughnessy (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
GripTex Childs (uncredited)
Film SoundChris King (uncredited)
Film Camera AssistantsBrian Easton (uncredited)
Film Camera AssistantsBrian Jones (uncredited)
Film Sound AssistantNorman Johnstone (uncredited)
GraphicsSid Lomax (uncredited)
Design AssistantFiona Comrie (uncredited)
Production SecretarySarah Newman (uncredited)
Director's AssistantCarolyn Driver (uncredited)
Music CopyistGeorge Bayton (uncredited)
Grams OperatorGordon Phillipson (uncredited)
Artist BookingSybil Cave (uncredited)
Props BuyerDorothy Elliott (uncredited)
Props BuyerRoger Hulme (uncredited)