Lucille Fletcher's play, Sorry, Wrong Number, is the story of an invalid, Mrs. Stevenson, who overhears a murder plot while she attempts to call her husband at his office. She calls the operator to have the call traced, but the operator suggests Mrs. Stevenson call the police. The police do not take Mrs. Stevenson seriously. When Mrs. Stevenson learns that her husband will not be home that evening, she panics and attempts to hire a nurse to stay with her. While she is speaking with an operator, she hears someone in the house. As the operator connects her with the police, Mrs. Stevenson is murdered. The killer tells the police that the call is a wrong number, and he hangs up the phone.