Big Change for Stuart by Lissa Evans
Stuart Horten (aged ten, but looks younger) is now the owner of a Magician's Workshop - a treasure trove of illusions and the gateway to seven magical adventures. Except that without his great-uncle's last will and testament, Stuart can't actually prove the workshop is his. Can he solve the puzzles and find the will before it's too late? Or will the looming danger and increasing risks ruin his friendships for good?