A novel, play, or film dealing with a puzzling crime, especially a murder.
The mystery genre is a type of fiction in which a detective, or other professional, solves a crime or series of crimes. It can take the form of a novel or short story. This genre may also be called detective or crime novels. The purpose of a mystery novel is to solve a puzzle and to create a feeling of resolution with the audience.
Find mystery books in the library labeled with this sticker:
And Then There Were None by 
Elephants Can Remember by 
The Hound of the Baskervilles by 
The Tell-Tale Heart by 