Keys from the kingdom. Book 1. Mr. Monday

When your family moves to another city, at first it is always not easy: a new school, new classmates, a new house. Arthur did not hope that everything would go smoothly. But what he certainly did not expect that miracles would begin on the very first day. And that he, Arthur, will have to go to a mysterious house, which only he could see, to defeat the powerful Mr. Monday, to become the legitimate heir to the kingdom and the owner of the first of the seven keys ... No, Arthur was not at all a hero and did not look for adventures. It just happened that he was the only one who could come to the rescue.
Gart Nix"s books have long been appreciated by young readers around the world. However, adults also read them with pleasure. And not surprising, because his fantastic worlds are always unique, and the adventures that fall to the share of heroes are always unexpected. “Mr. Monday” is the first book of the cycle “Keys from the Kingdom”