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.

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Main Cast: Jon Pertwee, Katy Manning, Roger Delgado, Nicholas Courtney, Richard Franklin, John Levene, Ingrid Pitt, Wanda Moore, Ian Collier, John Wyse

Director: Paul Bernard

Writers: Robert Sloman, Barry Letts

Editor:

Cinematographer:

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