Mild-mannered mystery writer D. H. Mercer has become so immersed in his material that his creation, hard-boiled private eye Biff Deegan, constantly appears to him as a hallucination. Intent on getting rid of Biff, and replacing him with a more civilized detective, Mercer soon finds himself in a genuine mystery involving art fraud, murder, and a beautiful lady in peril.
D.H. 'Hank' Mercer / Biff Deegan
Marissa
Lt. Greenberg
Victor Greville
Claire
Nicholas Rubinstein
Pete
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Tony (uncredited)
Timothy (uncredited)
Norman Wagstaff (uncredited)
Roger Delacroix (uncredited)