Eleven-year-old Tilly Pages, who has found comfort in her grandparents' bookshop since her mother's disappearance, now learns that she can bookwander into any stories, and decides to seek her mother.

"Milo lives on board the Sesquipedalian, or 'Quip'--a magical train that uses the power of imagination to travel through both Story and the real world. The train is owned by Milo's uncle, Horatio, and Milo has witnessed many of his uncle's dodgy dealings as a book smuggler trading in rare books."--Provided by publisher.

"When Milo, Tilly, Oskar, and Alessia venture into Arthurian legend to find the first bookwanderer--the wizard Merlin--they discover that the magic of bookwandering is not at all what they thought. Together, they must journey into Greek and Roman mythology to bargain with the trickster Loki and find a way to untangle the Alchemist's grip on the world's imagination. And to save Pages & Co. and protect the very foundations of bookwandering, the friends...