While visiting a friend of their grandfather's on Sullivan's Island, off the coast of South Carolina near Charleston, the Boxcar Children encounter mysterious activities related to rumors of a buried pirate treasure.

While visiting a recent purchase of Grandfather's, a ghost town in the Rocky Mountains, the Aldens encounter a mystery involving a run-down motel and a woman who may be a ghost.

What will the Aldens discover on a vacation to a beautiful island in the South Seas? The island is supposed to be deserted, but as the Aldens explore, they start to find signs that they suggest they are not alone.

"Henry, Jessie, Violet, and Benny used to live in a boxcar. Now they have adventures everywhere they go. At a lighthouse, the children find a mystery in the night!"--

"The Aldens visit their old friends, the Piccolos, at their pizzeria. When they learn the restaurant isn't doing well, they offer to help. But the oven doesn't work, the electricity shuts off, and then someone hands out fake coupons! Who wants to shut down the Piccolos' Pizzeria?"--Back cover. 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...

Henry, Jessie, Violet, and Benny are spending a week on a houseboat! Throughout the journey, the children have the feeling they are being watched--and they are. Someone wants something that's hidden on their boat, and they'll stop at nothing to get it.

The Alden children head to their aunt's ranch for the summer and make an amazing discovery! Adapted from Gertrude Chandler Warner's story of the same name, this early reader allows children to start reading with a Boxcar Children classic.

When Benny's friend Rory comes for a visit, the children find an old picture of their house. This leads them on a treasure hunt. When they find a journal hidden behind the wall of their guest room, it leads the Aldens on a search for a valuable collection. Adapted from Gertrude Chandler Warner's story of the same name, this early reader allows children to start reading with a Boxcar Children myseries classic.

While canoeing and backpacking near Timberwolf Lake, the Aldens receive strange warnings to stay away from the area and stumble upon clues to a missing cache of stolen coins.

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