boxcar children (fictitious characters)

Henry, Jessie, Violet, and Benny, attending an astronomy conference with their grandfather at Mountvale College, become involved in a mystery when a student who is slated to make a presentation about an outer space discovery learns that his research paper has been stolen.

While staying at a London inn, the Aldens are puzzled by the peculiar behavior of two fellow guests, a mysterious stranger who follows them, and a misplaced antique brooch.

While visiting Lake Lucille in the Adirondack Mountains, the Aldens hear stories about a monster in the lake and then encounter evidence that it may be real.

The Aldens realize the food their dog, Watch, is eating in a commercial and enjoying is not the same as what is being sold in stores, and must decide whether they should continue to allow him to work for the dishonest company.

While volunteering at a rescue ranch, the Alden children investigate the disappearance of a few horses.

Henry, Jessie, Violet, and Benny discover the fun in geocaching as they make new friends and search for hidden boxes around town, but the group soon begins to suspect that one of their new friends may be a thief.

People line up around the block to buy Mama Tova's cupcakes. But who could be trying to steal her secret recipe? The Boxcar Children follow clues to a cupcake contest, where they must use their mystery-solving skills to find a thief.

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

When it becomes clear someone in Cogwheel Stadium is stealing the Cogs' pitcher's signals and giving them to the other team's batters, the Aldens must find out who is doing the spying.

Henry, Jessie, Violet, and Benny investigate a mysterious ghost with a glowing pumpkin head when it is time for visitors to buy pumpkins and go on hayrides at the Beckett farm.