Last updated 24 March 2024


Episode Five

Series Episode Number: 287

World Premiere: Sat 27 Feb 1971 - 5:15pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 13 Nov 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 34 seconds

7.60 Million (UK)


Chart Position: 58 () (UK)

Recorded on Sat 19 Dec 1970 in Television Centre 3
Archive State: 16mm t/r



The Master forms an uneasy alliance with the Doctor so that between them they can subdue the Keller Machine which is now out of control.


Characters hide uncredited
Doctor WhoJon Pertwee
The MasterRoger Delgado
Brigadier Lethbridge-StewartNicholas Courtney
Jo GrantKaty Manning
Mike YatesRichard Franklin
Sergeant BentonJohn Levene
MailerWilliam Marlowe
Major CosworthPatrick Godfrey
BarnhamNeil McCarthy
FullerJohnny Barrs
Main Gates PrisonerLaurie Ayres
ChauffeurMichael Ely (uncredited)
Chief Prison Officer PowersRoy Purcell (uncredited)
Master's chauffeurFrancis Williams (uncredited)
Prison OfficerBarry Wade (uncredited)
Prison OfficerBill Matthews (uncredited)
Prison OfficerDave Carter (uncredited)
Prison OfficerGordon Stothard (uncredited)
Prison OfficerLes Conrad (uncredited)
Prison OfficerMartin Gordon (uncredited)
PrisonerDenis Balcombe (uncredited)
PrisonerRichard Atherton (uncredited)
PrisonerVal Musetti (uncredited)
Senior Prison Officer GreenEric Mason (uncredited)
StuntsAlan Chuntz (uncredited)
StuntsBilly Horrigan (uncredited)
StuntsDerek Martin (uncredited)
StuntsIan Elliott (uncredited)
StuntsLes Clark (uncredited)
StuntsMarc Boyle (uncredited)
StuntsMichael Carter (uncredited)
StuntsMike Stevens (uncredited)
StuntsRoy Scammell (uncredited)
StuntsTerry Walsh (uncredited)
UNIT SoldierCharles Marriott (uncredited)
UNIT SoldierRobert Bald (uncredited)
UNIT SoldierRoger Marsden (uncredited)
UNIT SoldierTony Jenkins (uncredited)
VosperHaydn Jones (uncredited)