Last updated 24 March 2024


Episode 1

Series Episode Number: 153

World Premiere: Sat 11 Mar 1967 - 5:51pm GMT [BBC One] (United Kingdom)
First Broadcast: Thu 26 Dec 2019 - 9:00pm EST [BBC America]
Running Time: 22 minutes 58 seconds

8.00 Million (UK)

Appreciation Index: 50 (UK)

Chart Position: 37 () (UK)

Recorded on Sat 04 Mar 1967 in Lime Grove D
Archive State: Missing



The TARDIS arrives at a human colony where everyone appears happy. However, one citizen claims to have seen something terrible and the Doctor is eager to find out what it is.


Characters hide uncredited
Dr. WhoPatrick Troughton
BenMichael Craze
PollyAnneke Wills
JamieFrazer Hines
PilotPeter Jeffrey
OlaGertan Klauber
MedokTerence Lodge
BarneyGraham Armitage
QuestaIan Fairbairn
SunnaaJane Enshawe
ChickiSandra Bryant
AlvisAnthony Gardner
Drum MajoretteMaureen Lane
Macra OperatorRobert Jewell
Guard (Colony)John Caesar (uncredited)
Guard (Colony)Steve Emerson (uncredited)
Guard (Colony)Danny Rae (uncredited)
VernaNina Huby (uncredited)
Band (colony)Avril Gaynor (uncredited)
Band (colony)Jill Paris (uncredited)
Band (colony)Fiona Fraser (uncredited)
Band (colony)Maris Dendrick (uncredited)
Band (colony)Janice Hoy (uncredited)
Band (colony)Amanda Scott (uncredited)
Dancer (Colony)Sheelagh McGrath (uncredited)
Dancer (Colony)Anthony Raynor (uncredited)
Dancer (Colony)Maureen Hillman (uncredited)
Dancer (Colony)Judy Nichols (uncredited)
Dancer (Colony)Ted Merwood (uncredited)
Citizen (Colony)George Gibbs (uncredited)
Citizen (Colony)Leslie Pitt (uncredited)
Citizen (Colony)Bill Beisley (uncredited)
Citizen (Colony)Deryn Fisher (uncredited)
Citizen (Colony)Maureen Morris (uncredited)
Citizen (Colony)Edwina King (uncredited)
ControllerGraham Leaman (uncredited)