A man climbs to the summit of the oldest inhabited place on earth, a mountain called the Citadel, a Vatican-like state that towers above the city of Ruin in Turkey. But this is no ordinary ascent. It is a symbolic act--and one that is witnessed by the world. Few understand its consequence. But for Kathryn Mann, it's evidence that a revolution is coming. For the Sancti, the secretive monks who live inside the Citadel, it could mean the end of everything they have built. They will stop at nothing to keep what is theirs--even kill if they have to. For reporter Liv Adamsen, it spurs the memory of the brother she lost, setting her on a journey across the world and into the heart of her own identity. There, she will make a discovery so shocking it will change everything . . .