Topaz is the best mercenary in the city, the top killer in New Haven and has the body count and the bank accounts to prove it. But she also has a secret, something that could get her killed. In a post-war world where nothing matters more than purity of blood, Topaz, a half-witch and half-vampire must conceal her family and bloodlines if she wants to survive. Hiding in plain sight, she makes a living as the city’s deadliest merc, until one day she is handed a file containing the names of all the half-bloods that the government demands be eliminated. Joined by a mysterious partner with secrets of his own, Topaz must work to keep her past hidden all the while staying off the government’s radar. When her history comes to light and war looms on the horizon, Topaz must decide what is more important - surviving or fighting for what’s right.