One warm night four children stood in front of a bakery. No one knew them. No one knew where they had come from. Henry, Jessie, Violet, and Benny

At an old library, the Alden children discover a boy who needs their help and a stranger who is after a valuable object they found in the library

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 da

The mysterious disappearance of a reclusive neighbor's cat involves the Boxcar children in some complicated detective work.

The Alden children investigate various mix-ups at a zoo run by their grandfather's friend in an effort to save it not only from pranksters but al

When they help out at a guide dog training school, the Alden children meet several people who seem obsessed with a particular dog named Ginger.

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

The Alden children hunt for their late grandmother's necklace that has been missing for years.

Someone is trying to put Aunt Jane's motel out of business, but the Alden children aren't going to let that happen.

The Aldens search for carousel horses that have disappeared from an amusement park.

While exploring the caves around Dragon's Mouth Cavern, a series of unusual and somewhat frightening events convinces the Alden children that som

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 vio