The Aldens start a helper service with their new friend,Beth, to raise money for the Greenfield Hospital! But Beth keeps disappearing when it's time to help. Then someone tears down their signs and lets the air out of their bike tires. Who would want to sabotage their fund-raiser?

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.

The Boxcar Children are helping the Heart and Hands group fix up the old Bugbee Mansion. The Aldens begin to explore the mansion, discovering hidden rooms and odd noises coming from the walls. Most intriguing is a secret staircase, leading to a room that no one knows about—no one except the thief!

The Aldens are starring in The Wizard of Oz—and even Benny and Watch have roles! But as the children get ready to perform, mysterious things start to happen. Can the Boxcar Children find out what's going on and save the show before opening night?

The Alden children discover a necklace that bears a striking resemblance to their grandmother's necklace, stolen on her first wedding anniversary

The Alden children wonder if the Florida panther could be the key to the disappearance of Andrew Beldon, a ranger in Everglades National Park in whose apartment they discover plenty of material about the endangered creature. Original.

For use in schools and libraries only. The Aldens are excited to be playing in their summer soccer league, until someone begins sabotaging the teams.