"Henry, Jessie, Violet and Benny, four orphaned brothers and sisters, suddenly appear in a small town. No one knows who these young wanderers are or where they have come from. Frightened to live with a grandfather they have never met, the children make a home for themselves in an abandoned red boxcar they discover in the woods. Henry, the oldest, goes to town to earn money and buy food and supplies. Ambitious and resourceful, the plucky children make...

Summer vacation on an almost private island gives the Aldens a challenge. Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There is a mysterious stranger on the island with a secret--but that's not the only surprise in store for the Boxcar Children.

"The Aldens climb a mountain and find a mystery! The hike up Old Flat Top was only supposed to take a day, but a dangerous rockslide changes everything to reveal a hidden cave that just may hold a legendary treasure!"--container.

When a professional hockey player comes to Greenfield with plans to build an ice skating rink, the Alden children suspect that someone in town wants to stop the project.

Violet and Jessie begin an adventure out West when they journey to Centerville to keep Aunt Jane company on the family ranch.

While visiting the Outer Banks of North Carolina, the Aldens see a mysterious wild horse that may be a ghost.

The Aldens, while testing the latest version of their favorite computer game, are surprised to find messages directed specifically at them.

The Boxcar children love exploring the train, watching the beautiful scenery from the observation car, and eating in the dining car. But the train ride gets really interesting when they meet a young woman who has had something very valuable stolen from her. Can the Aldens solve the mystery before the train pulls into the last stop?

The Boxcar children investigate the disappearance of a student's research paper from an observatory, and the subsequent disappearance of another student.

The Boxcar Children are going on vacation to Dragon's Mouth Cavern. The four Aldens like rock hunting in the area, until Benny finds a sinkhole that leads to the underground caves. While exploring the caves, they realize that someone doesn't want them there. But why? Can the Boxcar Children solve this new underground mystery?