Everyone thinks Aden Stone is a violent schizophrenic, but he doesn’t hear voices: He’s an unwilling host to four time-traveling, dead-raising, future-predicting and body-snatching souls. If one of them accidentally summons a zombie, he decapitates it with silver daggers stashed in his boots, behavior that has landed him in a halfway house in tiny Crossroads, Okla. When Aden meets Mary Ann, who neutralizes his powers and quiets the voices of the resident souls, the two form an intense, platonic bond. Unfortunately, the combination of their abilities summons every magical being in the world—goblins, fairies, ghosts, witches, werewolves and vampires—to find and exploit Aden’s power. Aden and Mary Ann meet and fall for two of the more benevolent visitors—Victoria, a soulful vampire princess, and Riley, her devoted werewolf bodyguard—and the four teens band together to save humanity from an all-out supernatural war over Aden. The hard-driving action and sexy but (mostly) chaste romance is occasionally bogged down in the exposition and world-building typical of initial series titles, but hooked readers will clamor for more. (Paranormal romance. YA)