Red sister

At the Convent of Sweet Mercy, young girls are raised to be killers. In some few children the old bloods show, gifting rare talents that can be honed to deadly or mystic effect. But even the mistresses of sword and shadow don't truly understand what they have purchased when Nona Grey is brought to their halls. It takes ten years to educate a Red Sister in the ways of blade and fist, but there is much more for Nona to learn than the arts of death....