The Number 24 (2009)

A seemingly normal teenager takes a book out of the library titled "The Number 24". As he begins to read the book, he becomes fascinated and obsessed with the demonic phrases and references. As he dwells deeper into the book and its secrets, he begins to fall into a world of suffering and murder as he stumbles deeper and deeper into the realms of insanity. With little mental strength left, he tries to piece together the intricate pieces of the puzzle behind the novel before it's too late.