Robert Papp

In 1777 Philadelphia, young Maddy Rose spies for General Washington's army by using an unusual code to communicate with her soldier brother.

While spending two days touring a zoo to see the baby animals, the four Alden children, aged six to fourteen, help catch an escaped monkey, participate in a photography contest, and investigate a missing camera.

"One day in the park, the Aldens' dog, Watch, comes across a mysterious box with a note inside. 'Congratulations!' the note says. 'You've found it!' The box is part of a game called Geocaching. Soon, Henry, Jessie, Violet, and Benny are searching all over town for hidden boxes and making friends with other kids in the geocaching club. But is one of the club members a thief?"--Page 4 of cover.

The Alden children stumble upon a mystery when they enter their dog, Watch, in a contest that could lead to fame and fortune, but where things keep going wrong.

The Aldens visit a farm that's famous for its corn maze and the festival held there every year. But someone is damaging the maze at night. Can the Boxcar Children catch the culprit and save the festival?

While visiting the Diamond Drive-In with their grandfather, the Boxcar Children investigate a series of pranks and ghost sightings at the outdoor theater.

When the Alden children accompany their grandfather on a trip to Seattle, they discover clues throughout the city, seemingly planted just for them.