Stuart Whitman Capt. Steve Calvino Actor Janet MacLachlan Frankie Actor Edmond O'Brien Chief Frank Modeer Actor Charles McGraw Lt. Mears Actor Patty McCormack Marie Hall Actor Rockne Tarkington Leonard Gardner Actor Burr DeBenning Sgt. Joe Harper Actor Ed Bernard Sgt. Collins Actor Antony Carbone Detective Evans Actor Bill Walker Minister Actor Leo Penn Director Morton S. Fine Writer David Friedkin Writer