Two assassins. One twisted underground. No choice. Since the beginning, Roslyn and Natalia have had no choice- or very little of it, to say the least. They would both be dead if not rescued by The Sontas and The Citadel, two warring underground groups filled to the brim with dangerous criminals. It is the Industrial Revolution in Paris, France, and tensions have never been higher as the clans battle against eachother... and the government. But what happens when Roslyn and Natalia find they have more in common than they first thought? When really, their lives are put at stake by the other's existence? Only one assassin can live. But the world is already dying.