William Beaudine Director Hugh Beaumont Michael Shayne Actor Trudy Marshall Phyllis Hamilton Actor Ralph Dunn Det. Peter Rafferty Actor Claire Carleton Mayme Martin Actor Charles Mitchell Tim Rourke Actor John Hamilton Albert Payson Actor Grandon Rhodes John Hardeman Actor Ben Welden Gil Madden , Theodore Ross Actor Byron Foulger Ben Edwards , Claude Bates Actor John Sutherland Screenwriter, Producer Jack Greenhalgh Cinematographer Harry Reynolds Film Editing Alvin Levin Original Music Glenn P. Thompson Set Decoration