Last updated 09 January 2020


Episode 4

Episode 4

Series Episode Number: 156

World Premiere: Sat 1 Apr 1967 - 5:50pm BST [BBC One] (United Kingdom)
Running Time: 24 minutes 41 seconds

8.40 Million (UK)

Appreciation Index: 49 (UK)

Chart Position: 39 () (UK)

Recorded on Sun 26 Mar 1967 in Lime Grove D
Archive State: Missing



The Doctor and Polly discover that the Macra are using the humans to mine the gas that they need to survive. The Pilot is shown the truth, but the Macra are still in control.


Characters hide uncredited
Dr. WhoPatrick Troughton
JamieFrazer Hines
OfficiaJohn Harvey
PollyAnneke Wills
OlaGertan Klauber
CheerleaderRoger Jerome
CheerleaderTerry Wright
CheerleaderRalph Carrigan
SunnaaJane Enshawe
ChickiLuan Peters
BenMichael Craze
PilotPeter Jeffrey
Drum MajoretteMaureen Lane
Macra OperatorRobert Jewell
Control VoiceDenis Goacher
GuardSteve Emerson (uncredited)
GuardJohn Caesar (uncredited)
(extra)Danny Rae (uncredited)
(extra)Avril Gaynor (uncredited)
(extra)Jill Paris (uncredited)
(extra)Fiona Fraser (uncredited)
(extra)Maris Hendrigk (uncredited)
(extra)Janice Hoy (uncredited)
(extra)Amanda Scott (uncredited)
(extra)George Gibbs (uncredited)
(extra)Leonard Kingston (uncredited)
(extra)Tony Starr (uncredited)
(extra)Deryn Fisher (uncredited)
(extra)Maureen Morris (uncredited)
(extra)Edwina King (uncredited)