It's seven in the morning. The Bantrys wake to find the body of a young woman in their library. She is wearing an evening dress and heavy makeup, which is now smeared across her cheeks. But who is she? How did she get there? And what is the connection with another dead girl, whose charred remains are later discovered in an abandoned quarry?

The respectable Bantrys invite Miss Marple into their home to investigate. Amid rumors of scandal, she baits a clever trap to catch a ruthless killer.