William is an unsuccessful guinea pig for a medical group interested in researching the common cold. He is soon fired and offered a job by the nearby National Atomic Research Center where they figure anyone who could fail at being a guinea pig is just what they need. They con William into thinking he will continue his guinea pig career by testing out some equipment for them before they send a group of astronauts to the moon.
Kenneth More
as William Blood
Shirley Anne Field
as Polly
Norman Bird
as Herbert
Michael Hordern
as Dr. Davidson
John Glyn-Jones
as Dr. Wilmot
Charles Gray
as Leo
Bernard Horsfall
as Rex
Bruce Boa
as Roy
Noel Purcell
as Prosecutor
Ed Devereaux
as Storekeeper
John Phillips
as Professor Stephens
Edward Burnham
as Test Chamber Scientist
