The 39 Clues Books

Bring the Adventure to Life

Bring the excitement of the international bestselling The 39 Clues series to the classroom! Explore geography, history, literature, and math while motivating reluctant readers with this action packed series. The CCSS ready curriculum guides, author Q&As, and multimedia resources make it easy and fun to start The Clue Hunt with your students.


Host a The 39 Clues Book Club

Sign up to host an official The 39 Clues Book Club and receive a free starter kit, along with monthly meeting theme ideas and activities to excite your readers no matter where they are in the series.

Book One: Cahills vs. Vespers Book One: The Medusa Plot

Cahills vs. Vespers Book One: The Medusa Plot by Gordon Korman

Just when Amy and Dan Cahill think their family is safe, disaster strikes—seven Cahills are kidnapped by a shadowy group known only as the Vespers. Amy and Dan have only days to fulfill a bizarre ransom request or the captured seven will start dying. But even as the race to save the hostages begins, a sinister question looms: What are the Vespers really after?

  • Historical Figures: Leonardo da Vinci, Caravaggio
  • Locations: Florence, Rome
Book Two: Cahills vs. Vespers Book Two: A King's Ransom

Cahills vs. Vespers Book Two: A King's Ransom by Jude Watson

With the lives of their kidnapped relatives on the line, Amy and Dan are given another impossible request—steal a priceless map that's been missing for more than half a century. As the body count rises, Amy and Dan start a frantic search across Europe and through one of the darkest periods of human history. However, the secrets they uncover about the Vespers are nothing compared to the most shocking discovery of all—someone thought to be dead seems very much alive . . .

  • History: WWII Nazi art theft, Johannes Kepler, Tycho Brahe
  • Locations: Lucerne, Germany's Neuschwanstein Castle, Prague
Book Three: Cahills vs. Vespers Book Three: The Dead of Night

Cahills vs. Vespers Book Three: The Dead of Night by Peter Lerangis

When seven members of his family were kidnapped by the Vespers, thirteen-year-old Dan Cahill knew he was in for the fight of his life. He knew he was up against an impossibly powerful enemy. And Dan knew the odds were that some of his family members wouldn't make it. But even as Dan steels himself to accept these facts, the unthinkable happens. The Vespers capture a blameless bystander—Dan's best friend Atticus. With an innocent life on the line, Dan kicks off a frantic hunt that will take him from the back alleys of Prague to the rock caves of Turkey. But Dan better find Atticus fast. If he doesn't, his best friend will surely die.

  • Historical Figures: Ulugh Beg
  • Locations: Cappadocia, Samarkand
Book Four: Cahills vs. Vespers Book Four: Shatterproof

Cahills vs. Vespers Book Four: Shatterproof by Roland Smith

After pulling some spectacular heists, Amy and Dan have become two of Interpol's most wanted criminals. So when Vesper One orders them to steal the world's largest diamond, they know they're facing life in prison . . . or worse. But with the Cahill hostages still in peril, Amy and Dan have no choice but to launch a mission that leads them to an ancient city full of dangerous secrets. With a Vesper mole sabotaging the Madrigals from inside, Amy and Dan have to fulfill their enemy's request before it's too late. Vesper One has developed a taste for killing Cahills, and Amy and Dan aren't going to wait to see who's next.

  • History: Africa's Ink Road
  • Locations: Pompeii, Berlin, Timbuktu
Book Five: Cahills vs. Vespers Book Five: Trust No One

Cahills vs. Vespers Book Five: Trust No One by Linda Sue Park

For the first time since leaving Attleboro, the fight against the Vespers has brought Amy and Dan back to the U.S., but their homecoming is anything but sweet. The siblings thought nothing could hurt more than having their loved ones kidnapped by a cruel and powerful enemy, but the Vespers have landed their most serious blow yet — a blow that strikes at the very heart of the Cahill family. There's a Vesper mole in their inner circle. Vesper One's next assignment will take the Cahills somewhere crawling with dangerous enemies. They have just days to complete their next assignment and discover who has their back... and who wants to stick a knife into it.

  • History: Archimedes, The Voynich Manuscript
  • Locations: Yale University, Iguazu Falls, Brazil, New York
Book Six: Cahills vs. Vespers Book Six: Day of Doom

Cahills vs. Vespers Book Six: Day of Doom by David Baldacci

It started with a kidnapping. A shadowy organization known only as the Vespers snatched seven members of the Cahill family and demanded a series of bizarre ransoms from around the world. Thirteen-year-old Dan Cahill and his older sister, Amy, began a global treasure hunt, determined to bring back whatever Vesper One needed, so long as it kept the hostages safe.

But when they deliver the last ransom, Amy and Dan discover Vesper One's terrifying endgame. The objects he demanded are vital pieces in a Vesper plot that will harm millions of innocent people. Now the two siblings and their friends are in an all-out sprint to stop Vesper One . . . before the whole world goes BOOM.

  • Historical Figures: Merriwether Lewis and William Clark
  • Locations: Washington, D.C.; The US Rockies
ccss Correlated to Common Core State Standards
Virtual Field Trip and Webcast Support Materials

Decoding History: A Virtual Field Trip to the Smithsonian’s National Museum of American History

Join New York Times bestselling The 39 Clues author, David Baldacci, as he takes students on a behind the scenes tour of the Smithsonian and explores some of history's great stories. Your students will meet renowned museum curators, learn about conservation, and uncover secret messages left behind by our ancestors.

Decoding Writing with The 39 Clues: Featuring Ruth Culham and The Traits of Writing

Join educator and writing expert Ruth Culham, along with The 39 Clues authors Gordon Korman, Peter Lerangis, Jude Watson, and Linda Sue Park, as they discuss The Traits of Writing and The 39 Clues.

The 39 Clues Advanced Agent Training

Join host William Michaels and authors Rick Riordan, Peter Lerangis, Gordon Korman, Patrick Carman, and Jude Watson as they train students for The Clue Hunt! Test student skills in math, geography, deductive reasoning, language arts, and problem solving!

ccss Correlated to Common Core State Standards