The Chronicles of Nightfire, Texas #6 "Secrets of the Nephilim"

Ray Don's past has finally caught up with him, as he is confronted by a man named Christian Rivers who claims to be a human-angel hybrid known as a Nephilim. Christian hopes to convince Ray to trust him by revealing to him the secret, sinister origins of the Prieuré de Sion. Faced with two underground orders that want to get their hands on the discovery he made during his travels, Ray may soon be forced to choose which one to trust, or risk losing everything his secret discovery might have helped him to gain.