As diplomats and royalty converge from across the Witchlands for a Truce Summit in Veñaza City, Safiya fon Hasstrel and her Threadsister Iseult det Midenzi hold up the wrong thrice-damned carriage north of town. Instead of the guy who’d stolen their savings, they find themselves facing a Bloodwitch who sniffs out Safi’s rare magic: the ability to tell truth from lie.