Fallen

When her estranged husband's mysterious death is declared an accident, Lilia Desjardins knows that it is a lie. She leaves all she knows to risk the dark heart of the Republic -- only to find that she herself has been targeted by forces unknown.

Adam Montgomery will do anything to complete his earthly mission, even if he has to tangle with the enigmatic Lilia Desjardins. But when his contact is murdered and he must rely on Lilia’s silence to save him from the slave dens, Adam knows that his wings were only the first sacrifice required of him. As danger and intrigue surround them, Lilia and Adam realize that they must work together -- body, mind, and soul -- in order to save the world. (The Prometheus Project #1)