Gertrude Chandler Warner

The Boxcar Children are spending the summer in a tiny, quiet New England fishing village. The little schoolhouse doesn't have a proper teacher, so the Aldens are teaching! There's also a very old library where nobody ever goes- nobody, that is, except for a mysterious stranger. For such a small town , Port Elizabeth has a lot of secrets!

The Alden children travel on a Mississippi paddle-wheel steamer to visit an old family friend in his cabin near Hannibal, Missouri, and try to discover who is responsible for the mysterious activities near the house.

While visiting Lake Lucille in the Adirondack Mountains, the Aldens hear stories about a monster in the lake and then encounter evidence that it may be real.

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

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

While visiting a Navaho Indian reservation in New Mexico, the Aldens try to save a forest under threat of development by proving it is the site of a lost, buried village, but someone is sabotaging their dig.

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

The Aldens investigate when a new store called the Game Spot opens in town and the neighboring shops are robbed.