No one rats on mobster Johnny Vanning. That's a message delivered to every would-be stoolie when Vanning's henchmen slash a gangland insignia on Mary Dwight's face. The real-life saga of prostitutes whose testimony put Lucky Luciano behind bars inspired Marked Woman. Bette Davis, sinking her claws into the role that marked her return to Hollywood after her legal fight for better projects, plays courageous Mary. In a rare '30s good-guy t