Nightmare in Him - Suzanne Wright

 The Ancients and the Aeons. Two groups of powerful immortals that have not seen eye to eye for millennia.

And right now, at the heart of their conflict, stands Wynter Dellavale. Wynter is a witch who sought safe haven for herself and her coven in Devil's Cradle. Founded by seven Ancient beings, the Home of Monsters provides protection, shelter, and will never give you up to outsiders .

. . providing you pay the Ancients' substantial fee.

Wynter already wears the brand of Cain - the mark that says she is in his service and that her soul partly belongs to him. But as their relationship deepens, Wynter has to make a choice from which there's no turning back. Cain cannot reveal the nightmare which lives inside him, the beast that could tear apart the woman who means more to him than he ever thought possible.

But with his brother Abel out for revenge, and the suspicious reappearance of his other relatives, Cain sees that Devil's Cradle is on the verge of war. As the stakes are raised, Cain knows he needs more than anything to keep Wynter safe and by his side - forever.