Shutter Island
Dennis Lehane
403 pages
U.S. Marshal Teddy Daniels and his partner, Chuck Aule, come to Shutter Island's Ashcliffe Hospital in search of an escaped mental patient, but uncover true wickedness as Ashcliffe's mysterious patient treatments propel them to the brink of insanity.
The whole book was amazing, and the ending was incredible, making it such a fun experience.
If you have not seen the movie, you should definitely read the book as it is better.