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.

Cast:Jon Pertwee, Katy Manning, Roger Delgado, Nicholas Courtney, Richard Franklin, John Levene,

Genre:Science Fiction, Drama, Adventure,

country:United Kingdom,

Production:BBC,