When an unknown assassin strikes, Jason Beckett, Emissary of the Devil, is forced to ally with his most hated adversary to rescue one of his most trusted friends. Fallen and Angel alike suffer at the hands of this hidden assassin, can Beckett and Rachel find and destroy the Whisperer in the Darkness before their world collapses in flames and death? In a world of Vampires, Werewolves, Angels and Fallen, good and evil are not always what they appear.