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 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

A boxed set of the first four Boxcar children mysteries.

Contains three mystery novels featuring the Boxcar children; including "The Mystery at the Ballpark," "The Mystery of the Hidden Beach," and "The Summer Camp Mystery."