Relic of Thieves

For the first printing only! This hardcover features sprayed edges while the special edition supply lasts. An ordinary girl’s longing to return to the way things were sets off a chain of events that lands her and her best friend in the Underwild in this second book in the New York Times bestselling middle grade fantasy series The Underwild—perfect for fans of Greenwild and Rick Riordan.

The best ways Anya knows how to cope with the struggles life throws her way is to keep her head down, stay invisible, and stick close to her best friend, Lizzie. Lizzie has been Anya’s rock since second grade. Together, they pretend the world away. But when Lizzie moves out of state, Anya is left adrift and desperately lonely. One day, Anya follows a strange girl home from school and is shocked to see her go into the home of the woman who everyone in town swears is a witch. As Anya spies on the pair, she realizes the woman really does have magic—including a set of magical keys that can deliver you anywhere you want to go…keys that could reunite Anya with Lizzie. Anya has seen all she needs to; as soon as she has the chance, she steals the keys. But magic always has a price. The keys do bring Anya to Lizzie, but then the girls are transported to the dark and chaotic world of the Underwild. Before long, Lizzie is snatched away by a terrible creature! Now wracked with guilt and paralyzed by fear, Anya has no choice but to trust the girl from school, Senka, when she unexpectedly shows up and offers to help. But can Anya find the bravery locked away deep inside herself in time to rescue her friend?

© 2026 Simon & Schuster Audio (Audiobook): 9781668156445

Release date

Audiobook: 24 March 2026