Last updated 24 March 2024


Episode Three

Series Episode Number: 326

World Premiere: Sat 3 Jun 1972 - 5:51pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 12 Dec 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 59 seconds

8.10 Million (UK)


Chart Position: 36 () (UK)

Recorded on Tue 09 May 1972 in TC4
Archive State: RSC conver



Krasis, High Priest of Atlantis, has been summoned by the Master to help him find the crystal of Kronos. The Master uses TOMTIT to summon threats from the past to attack UNIT.


Characters hide uncredited
Dr. WhoJon Pertwee
MasterRoger Delgado
Jo GrantKaty Manning
Brigadier Lethbridge-StewartNicholas Courtney
Mike YatesRichard Franklin
Sergeant BentonJohn Levene
Dr. Ruth IngramWanda Moore
Stuart HydeIan Collier
Dr. PercivalJohn Wyse
Unit SergeantSimon Legree
KrasisDonald Eccles
KronosMarc Boyle
DaliosGeorge Cormack
HippiasAidan Murphy
KnightGregory Powell
Roundhead OfficerDave Carter
Ambulance DriverB Cox (uncredited)
Ambulance LadySylvia De La Mare (uncredited)
Land Rover DriverMichael Deacon (uncredited)
Lorry DriverJack Parker (uncredited)
Lorry DriverRichard Rickford (uncredited)
RoundheadEric Kent (uncredited)
RoundheadAnthony Hennessey (uncredited)
RoundheadRichard Kirk (uncredited)
RoundheadPaul Barton (uncredited)
RoundheadGeoffrey Brighty (uncredited)
RoundheadNigel Winder (uncredited)
Soldier (UNIT)Nick Hobbs (uncredited)
Soldier (UNIT)Reg Turner (uncredited)
Soldier (UNIT)Les Conrad (uncredited)
Soldier (UNIT)Jim Dowdall (uncredited)
Soldier (UNIT)Kevin Moran (uncredited)
Soldier (UNIT)Bernard Barnsley (uncredited)
StuntsBob Blaine (uncredited)
StuntsStuart Barry (uncredited)
StuntsMike Stevens (uncredited)
StuntsDerek Allen (uncredited)
StuntsJames Muir (uncredited)
StuntsIan Elliott (uncredited)
StuntsBrian Gilmar (uncredited)