The Crimson Tome is the name of a prop book found in one of the rooms of Larkill Manor. As it's name might suggest, it is a red book with a cult symbol on it's cover known as The Crimson Seal. According to the mythology of Larkill Manor, the book belonged to a cult leader who previously owned the Manor. The Tome is like the fictional cult's bible. It details the cult's beliefs and practices, one of the most interesting may be an entry about The 13 Atonements. In reality, the entire book was written by DJ Ostrander to be used as a prop in the haunted house.