Codex
Lev Grossman
 The novel is about young banker Edward Wozny, who is sent by his firm to organize a mysterious client's library of rare books. He discovers the client may own a unique fourteenth-century codex, long thought to be a hoax by medieval scholars. As he becomes involved in the mystery of the codex, he also becomes addicted to a strange computer game that seems to have parallels to his real life.