When the children uncover a strange puzzle in a friend's back yard, it's the start of a "spy game" leading to gold. But first they must make sense of an old photo and a riddle, and learn just who is behind this mystery within a mystery.

When the Boxcar children help out in a local garden, they dig up one strange thing after another! First, the tomato plants seem to move every day. Find out how that can be.

The Boxcar Children know how much work it takes to live in the wilderness. They also know how much fun it can be! The children love exploring and learning new things at a primitive skills summer camp. But when strange things start happening around the camp, they need to use another of their favorite skills--mystery solving!

When their grandfather arranges for them to spend two week at Sunny Oaks, the four Alden children enjoy settling into the routines of farm life but become suspicious about a mysterious horse locked in the stables.

At the same time that the Alden children's efforts to raise money for a new hospital wing are being sabotaged by nasty tricks, they find their attempts to befriend the new girl Beth frustrated by her strange behavior.

"Henry, Jessie, Violet, and Benny used to live in a boxcar. Now they have adventures everywhere they go. At a lighthouse, the children find a mystery in the night!"

"The Aldens are on a special vacation up north to see the Calgary Stampede -- a cowboy celebration of Canada's frontier spirit! There's a parade through the streets of Calgary, a spectacular stage show, and plenty of fun things to do. But behind the scenes at the festival, an important piece of jewelry goes missing. Can the Boxcar Children find the thief before the big show is ruined?".

The Aldens investigate the rumors of ghosts, disappearing props and a haunted seat in the Trap-Door Theater.

The Aldens are helping out at a rescue ranch for horses. Jessie's favorite is a beautiful horse named Dragon. When Dragon and other horses disappear from the pasture, the Boxcar children must saddle up for a mystery. What's happening to the horses at the Dare To Dream Ranch?

The Boxcar Children have been chosen to compete against another team to look for clues on a game show.