Arthur Penhaligons magical adventures continue as he faces a new grave danger -- in the form of an enemy named Grim Tuesday. More amazing fantasy from best-selling author Garth Nix. Arthur doesnt think he will ever have to return to the strange house that nearly killed him on Monday -- the house that contains an entire world. But Tuesday brings new challenges -- in the form of an enemy named Grim Tuesday who threatens the well-being of both Arthurs family and his world. Arthur must retrieve the Second Key from Grim Tuesday in order to save everything -- an adventure that will include stealing a Sunship surviving a very weird work camp befriending a bearlike spirit fighting the voidlike Nithlings and traveling to the scary Far Reaches for the ultimate showdown.