If anyone has any doubt about Joan Crawford's greatness as an actor, then watch this movie. Her performance is sensational as the playwright who accidentally finds out that she is being set up. The story is compelling and conveys the sense of foreboding and suspense which grabs and keeps the audience's attention. Jack Palance gives a strong and convincing performance as a conman who marries Ms. Crawford. He is suave, urbane and sinister. Yet this movie is a Joan Crawford showcase. She is the center of the story and she succeeds in making this movie a most effective work of cinematic art. The cinematography is outstanding; it captures and conveys the sense of terror as the audience is taken on an emotional roller coaster ride toward a final, exciting conclusion.