Boxcar children mysteries

The Aldens stumble upon a new mystery to investigate when they discover that the fruits and vegetables they are helping grow in a local restaurant's garden are disappearing.

The Alden children save an old woman's house, land, and all the animals in her animal shelter from greedy contractors.

When the Aldens visit Yellowstone they discover a map showing the way to an old cabin where gold is supposedly hidden, but they encounter lots of interference in their attempts to hike the trail.

The Alden children solve a mystery and find long-lost treasure which belongs to an old Indian woman.

When they take their dog, Watch, for obedience training, the Alden children discover that some of the dogs in the class have vanished and decide to try to solve the mystery of their disappearance.

When the Alden children accompany their grandfather to the Snow Haven Lodge, a series of odd occurrences threaten to disrupt the annual winter games.

When their favorite pizza restaurant almost goes out of business, the Alden children try to help their friends stay open while they find out who is behind all their problems.

The Aldens get involved in questions about a boy's unusual behavior after they rent a lighthouse.