The Alden children suspect someone of trying to sabotage the local dog show.

The Alden children are thrilled when a famous orchestra comes to their town to perform, and when an original Mozart score turns up missing, they solve the mystery of its disappearance.

Four orphaned children make a home for themselves in an abandoned boxcar and are united with their grandfather.

On a camping trip to Arizona with their grandfather, the Alden children search for a lost gold mine.

When the Aldens float a rented houseboat down the river, they begin to notice strange things are happening in the river towns.

Henry, Jessie, Violet, and Benny are spending the summer traveling on a train -- in their own caboose, Number 777. At one train stop, a man startles the Boxcar Children when he runs away after hearing the number of their caboose. It isn't long before the Aldens learn the mysterious history behind caboose Number 777 -- a history that involves a circus clown, a high wire artist, and a valuable necklace. Come aboard and join the Boxcar Children in the...

The Alden children have another mystery to solve when they visit a castle and must figure out which of the guests has stolen the Stradivarius violin.

The Aldens are excited to be playing in their summer soccer league, until someone begins sabotaging the teams.

The Alden children plan to ride in their boxcar at the Greenfield Founders' Day Parade, but the newly refurbished boxcar is stolen a couple of days before the big event.

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