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.

Four orphans take shelter in an old boxcar during a storm, and, determined to make it their own, they turn it into a safe, cozy home.

Grandfather arranges for the Aldens to take a trip to a deserted island, but when they arrive, they discover that Blue Bay Island holds a mystery and it's up to them to solve it.

The Aldens are spending sunny days at the shore and summer nights in a mobile home righ on the beach! One morning, Benny finds a gold necklace in the sand. Soon a search for its owner begins, and a trail of clues leads the children to Tower House. What will the Boxcar Children find in the strange old mansion?

Six children help solve the mystery of a missing spyglass that has kept two brothers feuding for years.

Henry, Jessie, Violet, and Benny Alden 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 on their boat, and he'll stop at nothing to get it. Can the boxcar children figure it out before it's too late?"--P. [4] of cover.

"Henry, Jessie, Violet, and Benny Alden are going to climb a mountain! The hike up Old Flat Top is only supposed to take a day, but a dangerous rockslide changes everything. The rockslide reveals a hidden cave that just may hold a legendary treasure. Can the boxcar children solve the mystery of what's on top of the mountain?"--P. [4] of cover.

"When the Alden children take a summer trip to the New England coast, they have a fun place to stay--a lighthouse! But strange things happen after it gets dark and Watch wakes up growling at night. Can the boxcar children shed light on a seaside mystery?"--P. [4] of cover.

The Alden children, who are spending the summer in a New England farmhouse, are trying to discover who is stealing eggs from a woodshed near the house.

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.