Calling All Cars - The Murder Quartet

Mrs. Mudge sees Mrs. McManus on her way down to the Relief Headquarters to get her children something to eat. Mrs. McManus says that she has had a plumbing problem and has not seen the landlady, Mrs. Watson, for the last three days. Mrs. Mudge says that she has not seen her either, so they decide to go to her apartment. They knock on her door, but there is no answer. Mrs. McManus looks through the keyhole and sees that the place is a mess. Concerned about her, they call the police. The police discover that Mrs. Watson has been murdered. She had been tied up and beaten with a blunt instrument. The police said it looked like a robbery. They call the coroner, then start questioning her neighbors. One of them says that she had some money in her room and always wore a big diamond ring.