A Figure in Hiding

The Hardy Boys Secret Files Collection Books 1-5

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 Double Jinx Mystery

The Mystery of the Sinister Scarecrow

The Mystery of the Queens Jewels

The Curse of the Pharaoh #1 (Agatha: Girl of Mystery)

The Hardy Boys

Frank & Joe Hardy take on a puzzling case of theft leading to discovery of a network of criminals using a shortwave radio signal for their operations. The mystery deepens as they try to investigate who is behind the shortwave transmissions.

Discover Your Child's Next Read

A Figure in Hiding

Franklin W. Dixon, 1937

The Hardy Boys Secret Files Collection Books 1-5

Franklin W. Dixon, Scott Burroughs, 2014

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 Double Jinx Mystery

Carolyn Keene, 1973

The Mystery of the Sinister Scarecrow

M. V. Carey, Robert Arthur, Mary Carey, 1979

The Mystery of the Queens Jewels

Gertrude Warner, Gertrude Chandler Warner, 1998

The Curse of the Pharaoh #1 (Agatha: Girl of Mystery)

Steve Stevenson, Stefano Turconi, Siobhan Kelly, 2010