The Labyrinth of Lost and Found - Jordan Lees

Doll Bones meets Skandar and the Unicorn Thief in this spooky, illustrated middle grade novel about a boy who doesn't believe in magic discovering a supernatural world full of danger.
It began with a crack in the wall.

Eleven-year-old Benjamiah Creek believes in science, logic, and the power of reason. He definitely does not believe in magic. But when he receives a mysterious doll in the mail—a doll that can transform into a bird—he is led into an impossible (and most definitely magical) realm: Wreathenwold.

Wreathenwold is dangerous and holds many secrets within its labyrinthine walls—magi prowl, Hanged Men stalk, and at the center of its shifting streets lurks the Minotaur, a beastly creature and object of terror. In no time at all, Benjamiah is swept into a perilous adventure with the fierce and brilliant Elizabella, a girl determined to solve the disappearance of her missing brother, who may be caught up in a decades-old conspiracy that could doom them all.

Will Benjamiah ever find his way home? Or will he be lost forever in the labyrinth?