In the very heart of Europe, in the Balkans, there is a mysterious valley, which to this day is not marked on any map. Locals call it Wolf's Heart. This is the gateway to another, inhuman, frightening world. It is inhabited by strange creatures, the essence of which you will discover together with the heroes of this bewitching novel. The events take place in our days - here and now, and are distinguished by their frightening verisimilitude. So, who are werewolves? Monstrous embodiment of Evil? Or...