The four Alden children and their new friend Lars uncover a mystery during a trip to an island in the South Seas.

When someone steals an old boot, Jack doesn't care. Then someone steals his squeaker bone. And his blanket. And Red's ball. Now Jack DOES care. W

The Aldens help a farmer whose honeybees have stopped producing honey and discover a sabotage scheme.

The Alden children, who are spending the summer in a lighthouse on the New England coast, are disturbed by a mysterious woman walking the lightho

When the Hardy boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are una

When Ted and Kat's cousin Salim disappears from the London Eye ferris wheel, the two siblings must work together--Ted with his brain that is "wir

"The city of Metru Nui is divided into six parts. Each part has a guardian -- a Toa -- who watches over the Matoran who live there. However, some

When Bertie the badger visits his grandfather at a retirement home for magicians, he learns that his grandfather's rabbit, Enigma, has disappeare

An anthology of short graphic works by such artists as Kazu Kibuishi, Dave Roman, and Raina Telgemeier, all on the theme of a mysterious box and

When the Alden children spend a week visiting at Pilgrim Village, they uncover the mystery behind the unusual happenings at the historic site.

While visiting Chicago with their grandfather, the Alden children begin receiving mysterious clues to a treasure hunt. Includes related puzzles,

While sightseeing in Niagara Falls, the Boxcar children investigate a rash of souvenir store thefts. Includes related puzzles, games, and activit