When the Boxcar Children find a mysterious journal hidden behind the wall of the guest room, it leads them on a search for a valuable coin collection. But what happened to the journal's owner, and what is she trying to tell them?
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.
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.
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 Aldens find a castaway on a South Sea island. How did he get there and who is he?
Eccentric Aunt Jane needs help on her ranch. The Aldens overturn a plot against her.
The spooky old house on Surprise Island intrigues Benny.
The Alden children have a home with grandfather now - but their adventures are just beginning! Their first surprise comes when they learn they'll be spending the summer on their own private island. The kind stranger who lives there is always happy to help the children out, but does this new friend have a secret?