When Tess and Eliot stumble upon an ancient book hidden in a secret tunnel beneath the school library, they accidentally release a devil from his book-bound prison, and hell stop at nothing to stay free. Hell manipulate all the ink in the library books to do his bidding, hell murder in the stacks, and hell bleed into every inch of Tesss life until his freedom is permanent. Forced to work together, Tess and Eliot have to find a way to re-trap the devil before he kills everyone they know and love, including, increasingly, each other. And compared to what the devil has in store for them, school stress suddenly doesnt seem so bad after all.