At the beach, Benny finds a valuable gold locket and decides to try to find its owner. Soon the children are caught up in a puzzle involving strange visitors at the beach and the mysterious Miss Smith, who seems to live along in the big Tower House nearby.
A family moves into the house next door! The Boxcar Children decide to make friends with their new neighbors by building a tree house with them. In the process, they notice a window in their neighbor's house that nobody knows about. Does the old home have a secret?
A sudden snowstorm traps the Aldens in a mountain cabin! The cabin is cozy, but the children hear strange noises at night and find a coded message carved into the closet door. Can the children crack the code and solve their snowbound mystery?
Floating down a lazy river, Benny finds a blackmail scheme in progress.
A trip in a caboose at the end of a freight train leads to an old clown and a search.
The Aldens' friend Max says nothing interesting happens in Port Elizabeth. But when the children visit the small fishing village and come across a man snooping around the local library, they prove that every town has its mysteries.
Relates the adventures of the Alden family as they climb Old Flat Top Mountain.
Renting a lighthouse is unusual, but even more so is an unfriendly boy's peculiar behavior.
The Boxcar Children visit the old farmhouse where Grandfather and Aunt Jane grew up! But people in the nearby town seem to think something isn't quite right about the house. As the Boxcar Children investigate, they start to uncover secrets about the farm's past—dating all the way back to the Revolutionary War!
The Aldens find a castaway on a South Sea island. How did he get there and who is he?