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The 39 Clues


The 39 Clues

The 39 Clues is a set of four series written by a combination of authors. It is based in the present time, and is an interactive series as well as an output of information, mostly pertaining to famous historical events and/or people. Published by Scholastic, The 39 Clues has grown to include cards, a website, games, competitions, character biographies and much more.

Amy and Dan Cahill never knew their parents. They passed away in a fire when the siblings were young and their stingy grandaunt Beatrice became their guardian. However, on the weekends, Amy and Dan stayed with their grandmother, Grace Cahill, whose adventurous life gave her great stories to entertain her grandchildren with. When Grace passes away, many relatives gather at the reading of her will. Amy and Dan learn that they are part of the Cahill Family: an ancient family with four (secretly five) branches: the Lucians, Janus, Tomas, and Ekaterinas and secretly, the Madrigals. The founders of the Cahills, Gideon and Olivia Cahill had discovered a secret so powerful, that whoever found it would become the most powerful person in the entire world. In order to find the great secret, the searcher must have 39 different Clues, or ingredients, hidden throughout the world. When Grace died and her will was read, selectively chosen relatives had to make a choice: accept $1,000,000 or take the first Clue and start the hunt. Numerous relatives leave with the million dollars, including Aunt Beatrice, but seven teams stay: The Holt Family, Irina Spasky, Ian Kabra and Natalie Kabra, The Starling Family, Alistair Oh, Jonah Wizard, and Amy and Dan Cahill. Although the "official" Clue-Hunt began at Grace's funeral, the competition has been going on since the separation of the original Cahill Family and the creation of the branches. Members of the Cahill Family are sorted into their branches by their blood and their talents.

Official Website (Educator Materials available)

The 39 Clues

Books in this series

by Jude Watson - Adventure, Children's, Fiction, History, Juvenile Fiction, Mystery
For five hundred years, the Cahill Family has guarded the 39 Clues --- thirty-nine ingredients in a serum that transforms the taker into the most powerful person on earth. So certain Cahills have always kept the serum safe. Dan and Amy Cahill are the latest guardians of the Clues.  When a tiny mistake leads to catastrophe, Dan and Amy have to stop who stole it...before it’s game over. 
by Jeff Hirsch - Children's, Fiction
Thirteen-yer-old Dan Cahill and his older sister, Amy, are members of the most powerful family history has ever known. Now Dan and Amy are facing an enemy who has found a way to use the source of the Cahill family power against them. And with the enemy closing in, Dan finds himself facing the one terror he never imagined --- being betrayed by his own sister.
by Natalie Standiford - Adventure, Children's 8-12

The clock has run out for 13-year-old Dan Cahill. As head of the most powerful family the world has ever known, he and his older sister, Amy, have been in the crosshairs for too long. Dan and Amy have always managed to stay a step ahead of their enemies, but it was only a matter of time until luck failed them.

by Gordon Korman - Children's, Fiction, Mystery, Suspense, Youth Fiction

Tick Tock. Sixteen-year-old Amy Cahill only has few days to live. There’s a poison coursing through her, and her only chance is to collect ingredients for an antidote. Too bad the antidote ingredients are scattered around the world. And too bad that survival is by far Amy’s smallest problem.

by Jude Watson - Adventure, Children's 8-12

A Cahill from the past calling himself the Outcast has risen to challenge Ian with an impossible test. The Outcast has re-created four of history’s greatest disasters and dared Ian to stop him. If Ian and his allies can’t decipher the Outcast’s hints in time, innocent people will die. Ian’s only chance to beat the Outcast is to track down his former allies, Amy and Dan. But finding Amy and Dan will demand from Ian an impossible sacrifice...

by Clifford Riley - Fantasy

In 1814, redcoats burned the White House to the ground. In 1889, Harry Houdini discovered a trick that would save his life. In 1955, the U.S. launched the world's first nuclear submarine. And one family pulled the strings behind the scenes at each of these events: the Cahills--- the most powerful family the world has ever known. This volume contains three stories previously-published as ebook adventures.

by Jude Watson - Adventure

When seven members of their family were kidnapped by a sinister organization known as the Vespers, 13-year-old Dan Cahill and his older sister, Amy, vowed they'd stop at nothing to bring the hostages home. But then the ransom comes in and the Vespers demand the impossible. Amy and Dan have just days to track down and steal an ancient map. The only catch? No one has seen the map for half a century.

Now Amy and Dan are on a desperate search that will lead them to the Nazis, spies, a mad king and some of history's dirtiest secrets. It's the race of their lives…and one misstep will mean certain death for the hostages.

by Peter Lerangis - Adventure, Children's, Fiction, Mystery

Amy and Dan were devastated when the Vespers kidnapped seven Cahills around the world, holding them hostage until Amy and Dan delivered an impossible ransom. But now the Vespers have gone too far. They've kidnapped Atticus, an innocent 11-year-old boy and Dan's only friend. Now Dan and Amy are in the struggle of their lives.

by Roland Smith - Fiction, Spy Fiction, Thriller

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.

by Linda Sue Park - Fiction, Mystery, Thriller

Dan and Amy were ready for a fight when seven members of their family were kidnapped, but their enemy has proved to be very tricky. Can the Cahills defeat the Vespers before it's too late?

by David Baldacci - Adventure, Fiction

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.

by C. Alexander London - Adventure, Children's 8-12

The Cahills are the world's most powerful family, but their strength is being tested. A sinister man calling himself The Outcast has targeted the family and set them an impossible test. He's recreating four of history's worst disasters and challenging the young Cahills to find and stop the tragedies before it's too late. Now, with one disaster behind them, siblings Dan and Amy Cahill and their friends have just days to discover what the Outcast's next move will be.

by Jenny Goebel - Adventure, Children's 8-12

Who is the Outcast and why is he threatening the lives of innocent people? Book Three reveals a shocking secret that will send Amy and Dan --- and the world --- reeling.