The Secret of Skull Mountain

The Hardy Boys Secret Files Collection Books 1-5

The Twin Dilemma

Danger Overseas (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #2)

The Gross Ghost Mystery (Frank and Joe Hardy: The Clues Brothers #1)

The Mystery of the Shrinking House

Lost Treasure of the Emerald Eye

Legend of the Star Runner: A Timmi Tobbson Adventure

The Hardy Boys

In this exciting adventure, two young brothers, Frank and Joe Hardy, embark on a dangerous journey to unravel the mystery behind their father's disappearance. They find themselves trapped at sea on a perilous journey encountering hidden treasure, shady villains, and dangerous weather conditions.

Discover Your Child's Next Read

The Secret of Skull Mountain

Franklin W. Dixon, 1948

The Hardy Boys Secret Files Collection Books 1-5

Franklin W. Dixon, Scott Burroughs, 2014

The Twin Dilemma

Franklin W. Dixon, Carolyn Keene, 1993

Danger Overseas (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #2)

Franklin W. Dixon, Carolyn Keene, 2008

The Gross Ghost Mystery (Frank and Joe Hardy: The Clues Brothers #1)

Franklin W. Dixon, 1997

The Mystery of the Shrinking House

Jack Hearne, Alfred Hitchcock, William Arden, 1972

Lost Treasure of the Emerald Eye

Elisabetta Dami, Geronimo Stilton, 2000

Legend of the Star Runner: A Timmi Tobbson Adventure

J Wagner, 2018