After an accidental brush with death, twenty-one-year-old Kailani Sanchez finds herself in the company of Thorne, a boy as bitter as he is beautiful, who claims to be the one and only Grim Reaper. Though his actions have defied the laws of fate that bind him, Thorne is drawn to Kai in a way that neither of them quite understand. He makes a spur-of-the-moment promise to protect her at any cost, even if it means challenging the fabled Greek Fates themselves.
But when an ancient force with incredible power joins the fray, Thorne must make an agonizing choice: is a single mortal girl worth what he risks losing to keep her alive? And just how far is he willing to go in his quest to save her?