THE REAL BOOK OF MONSTERS, WEAPONS AND POTIONS AS SEEN IN THE SHOW! This in-universe book explores the monsters, weapons and potions in Grimm with detailed pictures and descriptions. The book is Aunt Marie's recording of the supernatural creatures she and her fellow Grimms have to defeat! Inspired by the classic Grimm Brothers' fairy tales, Grimm is a cop-drama with a twist! A detective discovers he has the ability to see supernatural beings, including a reformed 'Big Bad Wolf' and the witch-like Hexebiester, along with many others.