Nameless Book

The Nameless Book is a magical tome with dark magic and various mystical spells including the power to summon the a race of evil extradimensional monsters called the Old Ones and it plays a major role in the episode "Russian About" of The Real Ghostbusters cartoon series. The book is a relic from a time when the Old Ones ruled Earth, a book so powerful, so ancient, and full of sorcery that no one can say its true name or terrible things would happen.