The Hidden Harbor Mystery

Running on Empty (Hardy Boys Casefiles #36)

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 Clue of the Velvet Mask

The Last Dogs: The Vanishing (The Last Dogs, 1)

Legend of the Star Runner: A Timmi Tobbson Adventure

City of Lies

The Hardy Boys

The Hardy Boys series continues as our protagonists, Frank and Joe Hardy, find themselves embroiled in a mystery involving a ring of car thieves operating out of Bayport's airport. Through a series of suspenseful twists and turns, the boys manage to unravel the mystery in their usual, thrilling fashion.

Discover Your Child's Next Read

The Hidden Harbor Mystery

Franklin W. Dixon, 1935

Running on Empty (Hardy Boys Casefiles #36)

Franklin W. Dixon, 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 Clue of the Velvet Mask

Carolyn Keene, 1953

The Last Dogs: The Vanishing (The Last Dogs, 1)

Christopher Holt, Greg Call, 2012

Legend of the Star Runner: A Timmi Tobbson Adventure

J Wagner, 2018

City of Lies

Lian Tanner, 2011