Cornel Wilde
Leonard Diamond
Robert Middleton
Police Capt. Peterson
Jay Adler
Detective Sam Hill
Ted de Corsia
Ralph Bettini
Baynes Barron
Young detective
James McCallion
Frank - Lab technician
Tony Michaels
Photo technician
Michael Mark
Fred (hotel clerk)
Brian O'Hara
Attorney Malloy
Steve Mitchell
Bennie Smith, Boxer