Ida Lupino is trapped in her own home by crazy Robert Ryan in "Beware, My Lovely," a 1952 film from RKO. Lupino and Ryan did three films together and worked well as a team, both being consummate professionals and strong performers. In this film, based on a Broadway play called "The Man," Lupino is a World War I widow who rents out a room in her home. She's very active and well-liked in her community and though her husband has been dead for two years, she's not ready to move on. The man who rents her room goes on vacation, and Lupino hires Robert Ryan to help her with some heavy-duty cleaning in the house. He's friendly enough to start, but later terrorizes her, locking her in the house, and not allowing her to answer the phone or the door, as he grows violent and more out of touch with reality.

The character played by Ryan is shown in the beginning of the movie running away when he discovers a dead body in another house he's working in. It isn't clear whether or not he's the killer, since he seems surprised to see the body. He might be a split personality, as when his personality turns ugly toward Lupino, he seems to have no memory of his activities when he comes out of it. He doesn't know that he has the keys to Lupino's house in his pocket and doesn't know why he has tickets to a party that he bought from young children who came to the door.

"Beware, My Lovely," is a very suspenseful film, and the two leads give terrific performances. The tension builds to a very high level and ends in a way you're not expecting.