The Mysterious Benedict Society and the Riddle of Ages by Trenton Lee Stewart
From Little, Brown Books for Young Readers:
The brilliant and beloved gang from the New York Times bestselling series is back!
In its triumphant return, the Society encounters all new challenges, but the series’ trademark sly humor, sweet camaraderie, hairsbreadth escapes, and mind-bending puzzles are all as engaging as ever. Fans of the series will be thrilled to see the Society has grown up a little with them, while a new generation of readers will fall in love with these irresistible adventures.