Midnight Reckoning Dark Dynasties Series, Book 2.

Two separate worlds . . . One passion that binds them Wild and passionate by nature, Lyra Black is not just any werewolf. She's the future leader of the powerful pack of the Thorn-if she can stay alive long enough to inherit the title. One of the Cait Sith bloodline of vampire cat-shifters, Jaden Harrison has no interest in the wars plaguing the world of night. But when he rescues Lyra from a violent attack, they're both captured...