Cast
Bernard Horsfall
Rex
John Phillips
Professor Stephens
Edward Burnham
Test Chamber Scientist
Jeremy Lloyd
Jaguar Driver
Shirley Anne Field
Polly
Norman Bird
Herbert
Michael Hordern
Dr. Davidson
John Glyn-Jones
Dr. Wilmot
Charles Gray
Leo
Bruce Boa
Roy
Noel Purcell
Prosecutor
Ed Devereaux
Storekeeper
Kenneth More
William Blood