When the NSA invincible code-breaking machine encounters a code it connot break, the agency calls in head cryptographer, Susan Fletcher. What she uncovers sends shock waves through the corridors of power. Caught in a tempest of secrecy and lies, Fletcher battles for her country, her life and the life of the man she loves.

Amy and Dan Cahill have been located once again, this time in the company of the notoriously unreliable Alistair. Spies report that Amy and Dan seem to be tracking the life of one of the most powerful fighters the world has ever known. If this fearsome warrior was a Cahill, his secrets are sure to be well-guarded.

"While tracking clues from a secret code penciled in the margins of mystery novels at a public library, Derek Knowles-Collier discovers a time capsule, an unpublished author and a gravestone that may finally put his haunting past to rest."--Amazon.com.

Robert Langdon, Harvard professor of symbology and religious iconology, arrives at the Guggenheim Museum Bilbao to attend the unveiling of a discovery that "will change the face of science forever". The evening's host is his friend and former student, Edmond Kirsch, a forty-year-old tech magnate whose dazzling inventions and audacious predictions have made him a controversial figure around the world. This evening is to be no exception: he claims he...

"Are some secrets better left buried? As Amy and Dan track the next clue to a remote corner of the world, they make shocking discoveries about the source of the Cahills' power and the mystery of their parents' deaths. And as the threat of the mysterious Madrigals grows real, one of the clue-hunters makes the ultimate sacrifice. Amy and Dan have to decide how much they're willing to risk, and what they are fighting for. Can they avenge their parents...

When Amy and Dan Cahill's quest to find the million dollars takes them to Japan, they must decide whether or not to enter into an alliance with their uncle, Alastair Oh, whose motives for helping them are extremely questionable.

After seven members of their family are kidnapped by an organization called the Vespers, Dan and Amy Cahill must race against time to track down an ancient map to pay as ransom to bring the hostages home.

Harvard professor of symbology Robert Langdon awakens in a hospital in the middle of the night. Disoriented and suffering from a head wound, he recalls nothing of the last thirty-six hours, including how he got there, or the origin of the macabre object that his doctors discover hidden in his belongings. Langdon's world soon erupts into chaos, and he finds himself on the run in Florence with a stoic young woman, Sienna Brooks, whose clever manuevering...

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...

Le t the hunt begin. During the reading of their grandmother's will, Dan and Amy Cahill learn that the secrets to their family's power is hidden in the form of 39 Clues around the world. At the reading of their grandmother's will, Dan and Amy Cahill are given the choice of receiving a million dollars or uncovering the 39 clues hidden around the world that will lead to the source of the family's power, but by taking on the clues, they end up in a...