The story is revealed to the player through an extensive series of books and notes found throughout the game, and is heavily influenced by the works of H.P. Lovecraft.
The occult tomes found in the mansion's library include the Necronomicon and DeVermiisMysteriis, both taken from Lovecraft's Cthulhu Mythos.
Other mythos references include books that feature the narrated history of Lord Boleskine, a direct reference to another Infogrames Cthulhu Mythos based game, Shadow of the Comet, and the last name of player character Edward Carnby, a reference to John Carnby, a character in the mythos tale, Return of the Sorcerer by Clark Ashton Smith.