Strange things are happening. A man comes into Pages & Co. looking for a book… then suddenly can’t remember it. Tilly and her family feel like the world is changing – but can’t put their finger on why.

Meanwhile, the Underwoods still have their sights set on Tilly. Leaving the safety of the bookshop, Tilly and her best friend, Oskar, head to America to find the legendary Archivists and save bookwandering.

Or at least that’s the plan. Wandering in layers of story, Tilly and Oskar come up against new dangers, team up with an unexpectedly familiar face and ultimately find themselves taking on the biggest threat to stories there has ever been…