The Reaper's Call - Bloodcaster Chronicles, #3

An assassin on the run. An angel through time. A powerful immortal enemy. Cora Covington, once feared assassin, is on the run with the last remaining survivors of her demon coven. But as she struggles to retaliate against her power-hungry father, she realizes the cost to defeat him is more devastating than she feared. Vince Delgado walks the line between Reapers and Timekeepers, desperate to get back to Cora.
The more he uncovers about the Timekeepers, the more secrets he finds buried within the timeline... until he comes face-to-face with a deadly threat that transcends the laws of time. Cora and Vince must rely on their skills-and the strength of their love-in order to survive. But when their enemies align, the star-crossed lovers must confront their battles head-on before the world is torn apart. Even if it destroys them both.