The Body in the Library by Agatha Christie

Miss Marple is on the case again, this time called in by Dolly Bantry. A body has been found in her library, that of a young, heavily made-up girl. The rumors about Colonel Bantry are already flying and Mrs. Bantry knows of only one woman who can help. 

The girl was an exhibition dancer at a posh resort, covering for a cousin who had severely sprained her ankle. She was also cozying up to an older man who had lost all of his family in an airplane accident, all except a daughter-in-law and a son-in-law. When the man told them that he was considering adopting the now-dead-girl, the son- and daughter-in-law were upset. But were they the ones who killed her? Jane's on the case.

This is Agatha Christie at the top of her game, using actual clues as red herrings while still dropping breadcrumbs for the reader. 

Four stars

Follows The Regatta Mystery

Followed by The Moving Finger

Borrowed as audiobook from Libby

Opinions are my own