The Sinister Signpost

The Hardy Boys Secret Files Collection Books 1-5

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

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

The Quest of the Missing Map

The Mystery of the Coughing Dragon

The Quest for the Elusive Leon I Mean Noel

Kate on the Case

The Hardy Boys

The story follows two teenagers, Frank and Joe Hardy, as they embark on a quest to find their missing friends, Chet Morton and Biff Hooper. While searching, they uncover a dangerous gang of smugglers and become involved in a thrilling adventure that takes them from the quiet streets of Bayport to a deserted island.

Discover Your Child's Next Read

The Sinister Signpost

Franklin W. Dixon, 1936

The Hardy Boys Secret Files Collection Books 1-5

Franklin W. Dixon, Scott Burroughs, 2014

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

Franklin W. Dixon, 1997

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

Franklin W. Dixon, Carolyn Keene, 2008

The Quest of the Missing Map

Carolyn Keene, 1942

The Mystery of the Coughing Dragon

Nick West, Robert Arthur, 1970

The Quest for the Elusive Leon I Mean Noel

Ellen Raskin, 1971

Kate on the Case

Hannah Peck, 2021