Last updated 19 August 2023


Episode Four

Episode Four

Series Episode Number: 296

World Premiere: Sat 1 May 1971 - 6:12pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 4 Dec 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 20 seconds

8.10 Million (UK)


Chart Position: 28 () (UK)

Recorded on Sat 20 Mar 1971 in Television Centre 3
Archive State: RSC conver



The Master arrives, posing as an adjudicator from Earth who has come to settle the dispute between the colonists and the miners. However, he has an agenda of his own.


Characters hide uncredited
Doctor WhoJon Pertwee
MasterRoger Delgado
Jo GrantKaty Manning
CaldwellBernard Kay
WintonNicholas Pennell
AsheJohn Ringham
DentMorris Perry
MorganTony Caunter
NortonRoy Skelton
Mary AsheHelen Worth
Alec LeesonJohn Tordoff
GuardianNorman Atkyns
PrimitivePat Gorman
Alien PriestRoy Heymann
PrimitiveLes Clark (uncredited)
PrimitiveJohn McGrath (uncredited)
PrimitiveDerek Chafer (uncredited)
PrimitiveStewart Anderson (uncredited)
ColonistCharles Pickess (uncredited)
ColonistKen Halliwell (uncredited)
ColonistAlan Peters (uncredited)
ColonistJohn Caesar (uncredited)
ColonistBob Blaine (uncredited)
ColonistIan Elliott (uncredited)
IMC GuardBrian Gilmar (uncredited)
IMC GuardBrian Justice (uncredited)
IMC GuardKeith Simon (uncredited)
IMC GuardStewart Stephens (uncredited)
IMC GuardStanley Mason (uncredited)
IMC GuardAntonia Moss (uncredited)
Stunt ManTerry Walsh (uncredited)
Stunt ManDinny Powell (uncredited)
Stunt ManAlf Joint (uncredited)
PrimitiveValentino Musetti (uncredited)Info