"Superior Saturday" is the seventh book in the "Keys to the Kingdom" series by Garth Nix. The story follows Arthur Penhaligon, who embarks on a quest in the House, a fantastical and ever-changing realm ruled by the powerful Hierarchs. Arthur’s mission is to confront and defeat one of the series' main antagonists, Lady Saturday, while navigating the complex challenges that come with his role as the rightful heir to the Kingdom. As Arthur delves...