After being taught in a boarding school run by whites that Navajo is a useless language, Ned Begay and other Navajo men are recruited by the Marines to become Code Talkers, sending messages during World War II in their native tongue.

Two ex-Secret Service agents must face a dark world of violence, codes, and spies at a secret CIA training camp in this #1 New York Times bestseller about a mystery that could destroy the nation.
Near Washington, D.C., there are two clandestine institutions: the world's most unusual laboratory and a secret CIA training camp. Drawn to these sites by a murder, ex-Secret Service agent Sean King encounters a dark world of mathematicians,...

The secret Catholic organization known as Opus Dei has struck. The elderly curator of the Louvre has been found dead inside the museum, surrounded by eldritch ciphers in invisible ink. It is up to Harvard semiotician Robert Langdon and his French cryptologist partner Sophie Neveu to decode the cipers, and get to the bottom of an ever-widening mystery. They discover that the late curator was the gatekeeper of the "Priory of Sion", a secret society...

Commander Gray Perce and the Sigma Force participate in an adventure that races from the Roman Coliseum to the icy peaks of Norway, from the ruins of medieval abbeys to the lost tombs of Celtic kings. The ultimate nightmare is locked within a talisman buried by a dead saint--an ancient artifact known as the Doomsday Key--and a secret that has already claimed the lives of a famed geneticist, a Vatican archaeologist, and a U.S. senator's son.

Traces the life of Elizebeth Smith, who met and married groundbreaking cryptologist William Friedman and worked with him to discover and expose Nazi spy rings in South America by cracking multiple versions of the Enigma machine. "In 1916, a young Quaker schoolteacher and poetry scholar named Elizebeth Smith was hired by an eccentric tycoon to find the secret messages he believed were embedded in Shakespeare's plays. She moved to the tycoon's lavish...

"During the winter of 1952, British authorities entered the home of mathematician, cryptanalyst and war hero Alan Turing to investigate a reported burglary. They instead ended up arresting Turing himself on charges of "gross indecency," an accusation that would lead to his devastating conviction for the criminal offense of homosexuality - little did officials know, they were actually incriminating the pioneer of modern-day computing. Famously leading...