Chris Grabenstein is the bestselling author of the Mr. Lemoncello, Smartest Kid in the Universe, Dog Squad, and Welcome to Wonderland series, as well as the coauthor of numerous page-turners with James Patterson and of Shine!, cowritten with Chris's wife, J.J. Grabenstein.

"Readers will enjoy solving riddles alongside the brothers and will root for the pair as they set aside differences, dodge -- and sometimes cause -- disasters, and encounter entertaining characters and situations." --The Washington Post

"[A] clever and comedic homage to code breaking and treasure hunting....a thoroughly entertaining, lighthearted romp." --Publishers Weekly

"This is a delightful ride along Route 66 and through the ups and downs of brotherhood...This new puzzle adventure from the master of the genre is perfect for fans of Grabenstein's work and lovers of Murdle puzzles." --School Library Journal

"Grabenstein delivers the humor and puzzle-driven adventure fans have come to expect, this time with a somewhat cheesy side of family bonding." --Booklist

Publisher: Bound to Stay Bound Books

Pub date: 2025-10-14

Length: 265 pages