The Melted Coins

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 Dead Mans Riddle

Doublecross Mission Hindenburg

House Arrest (Mystery Files of Shelby Woo, No.6)

The Hardy Boys

The Billion Dollar Ransom is a thrilling story about the Hardy Boys' adventure in tracking down a gang of kidnappers who have abducted a billionaire's son and are demanding a billion dollar ransom.

Discover Your Child's Next Read

The Melted Coins

Franklin W. Dixon, 1944

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 Dead Mans Riddle

Robert Arthur, William Arden, 1974

Doublecross Mission Hindenburg

Alexander London, 2015

House Arrest (Mystery Files of Shelby Woo, No.6)

Lydia C. Marano, 1998