With the most powerful and most evil, of the Elder Gods - Cthulhu himself - roused from slumber and preparing to destroy all of mankind with a single blow, Crow and de Marigny are hopelessly outmatched. But they are not hopeless - they have been joined by heroes from other times, other worlds, other planes of reality. In a marvelous climax, heroes from other Brian Lumley series gather for the dramatic final battle.