"The Mystery of the Stolen Boxcar" Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they're fixing up their boxcar so they can ride it in the big Greenfield Founder's Day parade. There's just one problem: Someone has stolen the boxcar . . . with their dog, Watch, in it If only they can find the missing boxcar, it will lead them to Watch. Can the Boxcar Children solve their most important mystery ever?
"The Mystery in the Cave" 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?
"The Mystery on the Train" 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?