Killer Instinct (Killer Instinct #4)

Kim Wu, Jago and Tusk join forces to seek out the war-golem Aganos and the location of the legendary Lost Forge. Here is the only place on Earth where they can gain access to the Astral Plane-the dimension where someone or something is draining the powers of the Guardian Spirits. Kim Wu and her companions are unaware, however, that the Coven is tracking their every move, bent on slaying them before they can cross over.