meddling with the Secondary Realms (the human world). Without guidance from the Architect or the Old One, the Morrow Days each fell victim to one of the seven deadly sins and the House descended into chaos. As the Rightful Heir, Arthur must find the seven parts of the Will hidden by the Morrow Days and reclaim all parts of the House in order to fulfil the Architect's Will and restore the House to its original purpose. To secure the Lower House from Mister Monday, Arthur must steal the Hour Key from him. On his journey, Arthur briefly meets the Old One and also meets a Cockney girl-child named Suzy Turquoise Blue, who is possessed by the first part of the Will, a bossy, jade-colored frog. The Will advises Arthur and Suzy on how to break into Monday's quarters. Arthur successfully reclaims the Lower House and gains the Hour Key, which combines with the Minute Key to be the First Key of the House. Now freed, first part of the Will takes the form of Dame Primus. Arthur decides to turn governance of the Lower House to Dame Primus and uses the First Key to heal Mister Monday from his affliction of Sloth. Arthur receives a cure for the Fetchers' disease and returns home, relieved that his adventures in the House are over. However, Dame Primus contacts Arthur at midnight, when the day has become Tuesday, to tell Arthur that he is urgently needed back at the House. Publication history Mister Monday published on July 1, 2003, from Scholastic. In 2007, as part of a promotional campaign, a British bookstore chain gave away at least 50,000 copies of Mister Monday to accompany pre-ordered copies of J.K. Rowling's Harry Potter and the Deadly Hollows. Critical reception Mister Monday received generally positive reviews upon its initial release. Publishers Weekly gave it a starred review, saying, "With a likeable unlikely hero, fast-paced plotting and a plethora of mystical oddities (e.g., Mister Monday only has "dominion over everything" on Mondays), this series is sure to garner a host of fans." BookPage praised the worldbuilding of the series, noting, "Nix traps the reader in his world much as the House traps Arthur." Fantasy Book Review praised Nix's writing and favorably compared him to Roald Dahl, noting how the story contained multiple layers for adult and young adult readers. Ruth Arnell of Fantasy Literature gave it four