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The 39 Clues
The 39 Clues is a series of adventure novels written by a collaboration of authors, including Rick Riordan, Gordon Korman, Peter Lerangis, Jude Watson, Patrick Carman, Linda Sue Park, Margaret Peterson Haddix, Roland Smith, David Baldacci, Jeff Hirsch, Natalie Standiford, C. Alexander London, Sarwat Chadda and Jenny Goebel. It consists of five series, The Clue Hunt, Cahills vs. Vespers, Unstoppable, Doublecross, and Superspecial. They chronicle the adventures of two siblings, Amy and Dan Cahill, who discover that their family has been, and still is, the most influential family in history.
The first story arc concerns Amy and Dan's quest to find the 39 clues, a secret whose discoverer will become the most powerful person in the world. Subsequent arcs chronicle Amy and Dan's conflicts with enemy parties who desire either the clues or other Cahill family secrets. This series' primary audience is age 9–14. Since the release of the first novel, The Maze of Bones, on September 9, 2008, the books have gained popularity, positive reception, and commercial success. As of July 2010[update], the book series has about 8.5 million copies in print and has been translated into 24 languages.
The publisher of the books is Scholastic Press in the United States. Steven Spielberg acquired film rights to the series in June 2008, and a film based on the books was set to be released in 2016, but, as of October 2025, production has not yet started. The series also originated tie-in merchandise, including collectible cards and an interactive internet game.
The books follow the adventures of Amy and Dan Cahill, two orphaned siblings from Massachusetts who become involved in the affairs of the Cahill family following the death of their grandmother, Grace Cahill. Throughout their travels, they are assisted by their au pair Nellie Gomez and Grace's retainer William McIntyre. Following the death of their parents, Amy and Dan were put into the custody of their bitter aunt Beatrice Cahill. Grace's younger brother is Fiske Cahill, also known as The Man in Black.
Wealthy and ruthless English siblings Ian and Natalie Kabra are among the teams involved in the clue hunt. The very athletic and militaristic Holt family, consisting of parents Eisenhower and Mary-Todd, son Hamilton, and twin daughters Reagan and Madison, also search for the clues. Jonah Wizard is a hip-hop and action film celebrity who is managed by his father, Broderick while triplets Sinead, Ned, and Ted Starling are genius academics. Alistair Oh is a Korean businessman who has only a failed frozen food business to show for years in the industry while Russian former KGB assassin Irina Spasky is unable to trust or be trusted.
Half-brothers and academics Jake and Atticus Rosenbloom ally themselves with the Cahills, as does Turkish spy Erasmus Yilmaz. The Cahills are later aided biochemistry graduate student Sammy Mourad, digital cowboy Pony, and daughter-of-their-enemy Cara Pierce.
Villains that the Cahills encounter include murderous socialite Isabel Kabra, businessman Bae Oh, Nobel laureate and sculptor Cora Wizard, the apocalyptic sociopath known primarily as Damian Vesper, twin thieves Cheyenne and Casper Wyoming, fraudulent meteorologist Sandy Bancroft, Interpol agent Luna Amato, media tycoon J. Rutherford Pierce, the usurper known only as The Outcast, socialite Patricia Oh, Olympian Magnus Hansen, architect Toby Griffin, billionaire socialite Vikram Kabra, and billionaire Melinda Toth.
The first series follows orphans Amy and Dan Cahill who discover their family has shaped world history and includes almost every notable historical figure from the past five centuries. The family is divided into four branches—the artistic and creative Janus, the innovative and exploratory Ekaterina, the physically strong and determined Tomas, and the cunning and strategic Lucians. As part of their late grandmother's will, Amy and Dan engage in a competitive international hunt for the clues while evading various recurring Cahill relatives. Each book focuses on the search for a single clue and the historical figure who discovered it first.
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The 39 Clues
The 39 Clues is a series of adventure novels written by a collaboration of authors, including Rick Riordan, Gordon Korman, Peter Lerangis, Jude Watson, Patrick Carman, Linda Sue Park, Margaret Peterson Haddix, Roland Smith, David Baldacci, Jeff Hirsch, Natalie Standiford, C. Alexander London, Sarwat Chadda and Jenny Goebel. It consists of five series, The Clue Hunt, Cahills vs. Vespers, Unstoppable, Doublecross, and Superspecial. They chronicle the adventures of two siblings, Amy and Dan Cahill, who discover that their family has been, and still is, the most influential family in history.
The first story arc concerns Amy and Dan's quest to find the 39 clues, a secret whose discoverer will become the most powerful person in the world. Subsequent arcs chronicle Amy and Dan's conflicts with enemy parties who desire either the clues or other Cahill family secrets. This series' primary audience is age 9–14. Since the release of the first novel, The Maze of Bones, on September 9, 2008, the books have gained popularity, positive reception, and commercial success. As of July 2010[update], the book series has about 8.5 million copies in print and has been translated into 24 languages.
The publisher of the books is Scholastic Press in the United States. Steven Spielberg acquired film rights to the series in June 2008, and a film based on the books was set to be released in 2016, but, as of October 2025, production has not yet started. The series also originated tie-in merchandise, including collectible cards and an interactive internet game.
The books follow the adventures of Amy and Dan Cahill, two orphaned siblings from Massachusetts who become involved in the affairs of the Cahill family following the death of their grandmother, Grace Cahill. Throughout their travels, they are assisted by their au pair Nellie Gomez and Grace's retainer William McIntyre. Following the death of their parents, Amy and Dan were put into the custody of their bitter aunt Beatrice Cahill. Grace's younger brother is Fiske Cahill, also known as The Man in Black.
Wealthy and ruthless English siblings Ian and Natalie Kabra are among the teams involved in the clue hunt. The very athletic and militaristic Holt family, consisting of parents Eisenhower and Mary-Todd, son Hamilton, and twin daughters Reagan and Madison, also search for the clues. Jonah Wizard is a hip-hop and action film celebrity who is managed by his father, Broderick while triplets Sinead, Ned, and Ted Starling are genius academics. Alistair Oh is a Korean businessman who has only a failed frozen food business to show for years in the industry while Russian former KGB assassin Irina Spasky is unable to trust or be trusted.
Half-brothers and academics Jake and Atticus Rosenbloom ally themselves with the Cahills, as does Turkish spy Erasmus Yilmaz. The Cahills are later aided biochemistry graduate student Sammy Mourad, digital cowboy Pony, and daughter-of-their-enemy Cara Pierce.
Villains that the Cahills encounter include murderous socialite Isabel Kabra, businessman Bae Oh, Nobel laureate and sculptor Cora Wizard, the apocalyptic sociopath known primarily as Damian Vesper, twin thieves Cheyenne and Casper Wyoming, fraudulent meteorologist Sandy Bancroft, Interpol agent Luna Amato, media tycoon J. Rutherford Pierce, the usurper known only as The Outcast, socialite Patricia Oh, Olympian Magnus Hansen, architect Toby Griffin, billionaire socialite Vikram Kabra, and billionaire Melinda Toth.
The first series follows orphans Amy and Dan Cahill who discover their family has shaped world history and includes almost every notable historical figure from the past five centuries. The family is divided into four branches—the artistic and creative Janus, the innovative and exploratory Ekaterina, the physically strong and determined Tomas, and the cunning and strategic Lucians. As part of their late grandmother's will, Amy and Dan engage in a competitive international hunt for the clues while evading various recurring Cahill relatives. Each book focuses on the search for a single clue and the historical figure who discovered it first.