"On a farm, the Aldens find their oldest mystery yet! Adapted from Gertrude Chandler Warner's story of the same name, this early reader allows children to start reading with a Boxcar Children classic."--
Los hermanos Alden pasan las vacaciones de verano en su propia isla privada. Allí conocen a un misterioso nuevo amigo, ¡con un fascnante secreto! --Page 4 of cover.