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