Gertrude Chandler Warner

While visiting the Outer Banks of North Carolina, the Aldens see a mysterious wild horse that may be a ghost.

The Alden children are helping their new neighbors build a tree house when they discover an attic window that not even their neighbors knew about.

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 violin.

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

The Boxcar children, while participating in the "Teddy bear festival," help recover a valuable teddy bear that disappeared from the toy hospital.

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

Summer vacation on an almost private island gives the Aldens a challenge. Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There is a mysterious stranger on the island with a secret--but that's not the only surprise in store for the Boxcar Children.

The Alden children are staying at the New England farmhouse where their grandfather grew up. There are many stories and legends about the old farm, and there's a woodshed near the house that holds a surprising secret... a secret that dates all the way back to the Revolutionary War!

The Aldens investigate when the new coach of their community basketball league has her Most Valuable Player trophy stolen.

While visiting their cousin's pineapple plantation in Hawaii, the Aldens hear a local legend about a black pearl with a curse on it and investigate mysterious incidents on and around the plantation.