The body in the library

When the Bantrys wake to find the body of a beautiful, young stranger in their library, Dolly Bantry knows there's only one person to call: her old friend Miss Marple. Who was the young girl? What was she doing in the library? And is there a connection with another dead girl, whose charred remains are discovered in an abandoned quarry? Miss Marple must solve the mystery, before tongues start to wag and the murderer strikes again.