Mystery Behind the Wall (the Boxcar Children: Time to Read, Level 2)Paperback, 11 May 2023

The Aldens search their home for hidden treasure.

Hidden behind the wall of their guest room, a mysterious journal leads the Aldens on a search for a valuable collection. Adapted from Gertrude Chandler Warner's story of the same name, this early reader allows children to start reading by themselves with a Boxcar Children classic.