Cold Demon Hunter by Kait Ballenger — book slip

David Aronowitz, a formidable exorcist and member of the Rogue Brotherhood, is feared by hellspawn everywhere. But when a demon possesses Allyson O'Hare, the only woman he's ever loved, David must confront their painful past to save her. Allyson, caught between the Fae and human worlds, finds herself reunited with David, her greatest temptation and biggest mistake. As they navigate a dangerous game with the demon controlling her, David must decide if saving Allyson is worth risking his own life and the future of humanity.

Perfect for fans of Supernatural, this is the second book in the Rogue Brotherhood series.