William Nigh Director Boris Karloff James Lee Wong Actor Grant Withers Capt. Bill Street Actor Marjorie Reynolds Roberta "Bobbie" Logan Actor Charles Trowbridge John T. Forbes Actor Frank Puglia Harry 'Hardway' Lockett Actor Craig Reynolds Frank Belden Jr. Actor Lita Chevret Tanya Serova Actor Harry Strang Det. Ballard Actor Hooper Atchley Frank Belden Sr. Actor Jason Robards Sr. Griswold Actor Richard Loo Jeweler Actor Jack Kennedy Mike Actor W. Scott Darling Screenwriter Scott R. Dunlap Producer Harry Neumann Cinematographer Russell F. Schoengarth Film Editing