An exhilarating, wondrous middle grade debut about a brother and sister on a quest that "swoops from thrilling to terrifying to heartwarming and back again" (BookPage) to defeat a tyrannical ruler and protect a magical book. " W]ill appeal to readers of Kelly Barnhill and Lemony Snicket" (Publishers Weekly). Rachel and Robert live a gray, dreary life under the rule of cruel and calculating Charles Malstain. That is, until...