The Thickety is on the mend, but Kara and Taff are in a race against and through time to find the first grimoire before Rygoth the Spider Queen gets to it and becomes indestructible. In this final chapter of the series, Kara may have to make an unimaginable sacrifice in order to save magic--and the world. A thrilling and immensely satisfying conclusion to one of the best middle grade series of the last several years. #kidlit @HarperCollins