Last updated 24 March 2024


Episode Seven

Series Episode Number: 226

World Premiere: Sat 14 Dec 1968 - 5:14pm BST [BBC One] (United Kingdom)
Running Time: 24 minutes 46 seconds

7.20 Million (UK)

Appreciation Index: 55 (UK)

Chart Position: 51 () (UK)

Recorded on Fri 01 Nov 1968 in Lime Grove D
Archive State: 16mm t/r



The Cybermen have immobilised the Earth's population with a hypnotic signal. Their fleet arrives and they invade in force. The Doctor desperately attempts to persuade Vaughn to help him resist the invaders.


Characters hide uncredited
Dr. WhoPatrick Troughton
IsobelSally Faulkner
ZoeWendy Padbury
JamieFrazer Hines
Captain TurnerRobert Sidaway
Sergeant WaltersJames Thornhill
Brigadier Lethbridge-StewartNicholas Courtney
Tobias VaughnKevin Stoney
PackerPeter Halliday
Professor WatkinsEdward Burnham
Major BranwellClifford Earl
Sergeant PetersNorman Hartley
CybermanRalph Carrigan
CybermanCharles Finch
CybermanPat Gorman
CybermanRichard King
CybermanJohn Spadbury
CybermanPeter Thornton
UNIT/Bunker CrewGary Dean (uncredited)
UNIT/Bunker CrewBarry Dupres (uncredited)
UNIT/Bunker CrewJohn Kielty (uncredited)
UNIT/Bunker CrewMike Lee (uncredited)
UNIT/Bunker CrewCrawford Lyle (uncredited)
UNIT/Bunker CrewAlistair McFarlane (uncredited)
UNIT/Bunker CrewTony Manning (uncredited)
UNIT/Bunker CrewVictor Munt (uncredited)
UNIT/Bunker CrewDavid Pelton (uncredited)
UNIT/Bunker CrewClark Reed (uncredited)
UNIT/Bunker CrewPeter Roy (uncredited)
UNIT/Bunker CrewDerrick Slater (uncredited)