The international bestselling author of the Broken Empire and the Red Queen’s War trilogies begins a stunning epic fantasy series about a secretive order of holy warriors...   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