When the Aldens visit Peggy and Doc Firmin's farm, they're in for a treat: a behind-the-scenes look at a real teddy bear workshop! But a very rare and valuable bear has disappeared from the toy hospital. Now it's up to the children to track down the teddy thief!

The Aldens are spending a week at Camp Seagull on beautiful Claw Island. But as soon as camp begins, they realize that someone is not playing fair. Everything begins to go wrong for the Aldens they lose their luggage, Henry misplaces the camp flag, and the campers on the other team use one of Jessies ideas to score points for themselves. Are some campers so desperate to win the Olympics that they are willing to cheat? The Boxcar Children are...

The Aldens visit an old Kansas inn that's full of secrets! Nobody knows why a famous photographer visited the inn just to take a single picture. And what about the other legendary guest--a heroic young stranger who'd come west on an "orphan train?"

The Alden children, isolated in a storm at a small bus station, are led into a mystery centering on a polluted river.

The Aldens help out at a medieval fair and try to find a valuable sword which has been stolen from the fair.

The Aldens, along with Butterscotch the horse, attempt to find a saboteur who is trying to shut down their ice cream wagon.

The Aldens participate in a three-day bicycle ride and soon find that someone seems to be intent on keeping others from completing the event.

The Aldens take part in a hunt at a gem mine and discover that someone is out to sabotage the contest.

While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.

When their favorite author fails to arrive as scheduled to speak at the local library, the Alden children investigate how he could board a train and never be seen again.