As a Nephilim, Madelyne is one step below immortal. But after ninety-three years of captivity at the hands of the depraved Archangel Uriah, she has learned to flinch at every change around her. So she panics when she literally walks into a demon outside her favorite cafe, and again when he seeks her out a few days later. Sinclair is a demon with more secrets than most, including a power thought lost to his breed. But one look into the wide, beautiful blue eyes of the Nephilim woman outside the cafe and his entire life is in disarray. Her eyes haunt him, even before he learns the depth of their true sight, and he can't help but seek her out again. This time on purpose, this time with an offer of allegiance - working together to destroy their mutual enemies. Their partnership is still fragile when they learn Madelyne is being actively pursued by the most powerful demons in Hell. The betrayal that follows forces them to change their circumstances in ways neither are used to, and Madelyne and Sinclair find themselves living together ... and immediately dancing with a dangerous temptation to take their partnership beyond the professional. But intimacy requires trust, and vulnerability. What sort of relationship can even exist between a Nephilim and a demon?