Tempting The Dark by Michele Hauf

His calling…might be her destruction

When the door to Daemonia is opened, Savin Thorne is reunited with a childhood friend he thought he'd lost forever. After years of captivity, Jett has escaped – along with hordes of monsters streaming into the mortal realm. With Savin, she has her first experience of desire. But their passion can't save them. It might even be their undoing…