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. A bloodstained child of nine falsely accused of murder, guilty of worse, Nona is stolen from the shadow of the noose. It takes ten years to...

"When Cesare Aldo investigates a report of intruders at a convent in the Renaissance city’s northern quarter, he enters a community divided by bitter rivalries and harboring dark secrets. When a man’s body is found deep inside the convent, stabbed more than two dozen times, the case becomes even more complicated. Unthinkable as it seems, all the evidence suggests one of the nuns must be the killer. Meanwhile, Constable Carlo Strocchi...