The Master, in the guise of Professor Thascalos, has constructed at the Newton Institute in Wootton a device known as TOMTIT - Transmission Of Matter Through Interstitial Time - to gain control over Kronos, a creature from outside time. The creature is summoned but proves to be uncontrollable.
as The Doctor
as Jo Grant
as The Master
as Brigadier Lethbridge-Stewart
as Captain Mike Yates
as Sergeant Benton
as Galleia
as Dr. Ruth Ingram
as Stuart Hyde
as Dr. Percival
as Dr. Cook
as Krasis
as Hippias
as Neophite
as Proctor
as Kronos
as Dalios
as Crito
as Lakis
as Miseus
as Minotaur
