text: Beware My Lovely originated from a play written by Mel Dinelli who apparently liked writing about frightened women. His first and best effort was the screenplay for The Spiral Staircase. He also did a Loretta Young suspense thriller Cause For Alarm a couple of years earlier. The play Dinelli wrote was originally entitled The Man and it ran for 92 performances on Broadway during the 1950 season. It was Dinelli's only effort on Broadway and it starred Dorothy Gish and Richard Boone. <br /><br />The roles that Gish and Boone played are taken by Ida Lupino and Robert Ryan. For whatever reason RKO thought to eliminate the age difference. Dinelli