Books in 39 CLUES series

The Maze of Bones by Rick Riordan: Amy and Dan Cahill begin a dangerous race when they discover the source of their family’s power is hidden around the world in the form of 39 Clues.One False Note by Gordon Korman: The siblings are in the lead when their search takes them to Vienna and a coded piece of Mozart’s sheet music.The Sword Thief by Peter Lerangis: In Japan, Amy and Dan must decide whether or not to make an alliance with their unreliable uncle, Alistair Oh.Beyond the Grave by Jude Watson: When the Cahills arrive in Egypt they receive a message from their dead grandmother.The Black Circle by Patrick Carman: A telegram lures Amy and Dan into a race to uncover two of Russia’s biggest mysteries.In Too Deep by Jude Watson: The siblings make a shocking discovery about their parents’ deaths as they track the next Clue to the Land Down Under.The Viper's Nest by Peter Lerangis: While learning the art of ancient warfare, Amy and Dan uncover a secret about their family tree that changes everything.The Emperor's Code by Gordon Korman: Amy and Dan are separated while attempting to steal a Clue guarded by the world’s best-trained soldiers.Storm Warning by Linda Sue Park: The pair hits the high seas following a trail of infamous ancestors to track down a long lost treasure.Into the Gauntlet by Margaret Peterson Haddix: Nearing the end of the hunt, Amy and Dan face their most difficult challenge yet—reuniting their backstabbing family.Vespers Rising by Rick Riordan, Peter Lerangis, Gordon Korman, and Jude Watson: The Cahill siblings thought they could return to normal after the hunt for the 39 Clues, but powerful enemies will stop at nothing to grab the Clues for themselves.

It's no longer a game. The body count is rising. Shaken by recent events, Amy and Dan flee to a distant land and trace the footsteps of their most formidable ancestor yet: a military leader of mythic proportions. Yet just as the siblings begin to master the art of ancient warfare, they confront a dangerous enemy that can't be felled with a sword: the truth. With the stakes higher than ever, Amy and Dan uncover something so devastating it changes everything--the secret of their family branch.