Dr. Charles Marlowe is on the verge of a medical breakthrough: He's devised a drug capable of releasing people's deepest inhibitions. But when he uses the drug on himself, he releases something else -- a horrifying alter ego named Mr. Blake.

Medvirkende

Christopher Lee

Dr. Charles Marlowe

Peter Cushing

Frederick Utterson

Mike Raven

Enfield

Richard Hurndall

Lanyon

George Merritt

Poole

Stephen Weeks

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