Julia has the unusual ability to be . . . unseen. Not invisible, exactly. Just beyond most people's senses. It's a dangerous trait in a city that has banned all forms of magic and drowns witches in public Cleansings. But it's a useful trait for a thief and a spy. And Julia has learned—crime pays. Her latest job is paying very well indeed. Julia is posing as a housemaid in the grand house of Mrs. Och, where an odd assortment of characters live and work: A disgraced professor who sends her to fetch parcels containing bullets, spiders, and poison. An aristocratic houseguest who is locked in the basement each night. And a mysterious young woman who is clearly in hiding—though from what or whom? Worse, Julia suspects that there's a connection between these people and the killer leaving a trail of bodies across the frozen city. The more she learns, the more she wants to be done with this unnatural job. To go back to the safety of her friends and fellow thieves. But Julia is entangled in a struggle between forces more powerful than she'd ever imagined. Escape will come at a terrible price.

Julia and a mismatched band of revolutionaries, scholars, and thieves have crossed the world searching for a witch. But for all the miles traveled, they are no closer to finding Ko Dan. No closer to undoing the terrible spell he cast that bound an ancient magic to the life of a small child. Casimir wants that magic will happily kill Theo to extract it and every moment they hunt for Ko Dan, Casimir s assassins are hunting them. Julia can deal with danger. The thing that truly scares her lies within. Her strange ability to vanish to a place just out of sight has grown: she can now disappear so completely that it s like stepping into another world. It s a fiery, hellish world, filled with creatures who seem to recognize her and count her as one of their own. So . . . is Julia a girl with a monster lurking inside her? Or a monster wearing the disguise of a girl? If she can use her monstrous power to save Theo, does it matter?

In this heart-pounding conclusion to the Witch's Child trilogy, Catherine Egan's masterful world-building and fiercely flawed heroine will thrill fans of Graceling and Six of Crows. Julia has been ensnared in so many different webs, it's hard to see how she'll ever break free. She must do Casimir's bidding in order to save the life of her brother. She must work against Casimir to save the lives of most everyone else she knows. Casimir demands that Julia use her vanishing skills to act as a spy at court and ensure that a malleable prince is installed on the throne of Frayne. But Julia is secretly acting as a double agent, passing information to the revolutionaries and witches who want a rebel princess to rule. Beyond these deadly entanglements, Julia is also desperately seeking the truth about herself: How is it she can vanish? Is she some form of monster? Is her life her own? With every move she makes, Julia finds herself tangled ever tighter. Should she try to save her country? Her brother? A beloved child? Can she even save herself?