This time, Arthur and his friends - Leaf and Susie - will need all their strength and courage to defeat their enemies and stop the Void, which threatens to destroy the House, and with it all the Secondary Kingdoms. Ahead of Arthur lies a fight with Lord Sunday - the Master of the Incomparable Gardens, the last of the Trustees. Will the boy be able to defeat the strongest Resident of the House and take possession of the Seventh Key? And most importantly, will he return home to his family? The magical story of Arthur Penhaligon is about to end, and very soon we will find out what its outcome will be... Garth Nix's books have long been appreciated by young lovers of mysterious stories. However, adults also read them with pleasure. And it’s not surprising, because the fantasy worlds of Nyx are always unique, and the adventures that befall the heroes are unexpected every time. Lord Sunday is the final book in the Keys to the Kingdom series.