Harvard symbologist Robert Langdon is thrust into the dangerous intersection of humankind's two most enduring questions, and the earthshaking discovery that will answer them.

"As the Germans waged a brutal war across Europe, details of every Nazi plan, every attack, every troop movement were sent over radio. But to the Allied troops listening in—and they were always listening—the crucial messages sounded like gibberish. The communications were encoded with a powerful cipher, making all information utterly inaccessible . . . unless you could unlock the key to the secret code behind the German’s powerful Enigma machine....

The award-winning New York Times bestseller about the American women who secretly served as codebreakers during World War II—a "prodigiously researched and engrossing" (New York Times) book that "shines a light on a hidden chapter of American history" (Denver Post).
Recruited by the U.S. Army and Navy from small towns and elite colleges, more than ten thousand women served as codebreakers during World War II. While...

"This New York Times bestselling mystery series continues as American-born codebreaker extraordinaire, Maggie Hope, returns to England to continue her intelligence work during World War II. England, 1942. Great Britain and the U.S. have joined forces to fight the Nazis. In London, Maggie Hope takes on the biggest challenge of her career: finding a killer who models himself on Jack the Ripper--and who targets female intelligence agents...like Maggie"--Provided...

"In 1964, a group of scientists called the Los Alamos Five came close to finishing a nuclear energy project for the United States government when they were abruptly disbanded. Now the granddaughter of one of those scientists, aerospace engineer Elinor Mitchell, discovers that she has highly sensitive information on the project in her possession--and a target on her back. SNAP agent and former Navy cryptologist Kekoa Young is tasked with monitoring...

"Throughout history, people have written coded messages to safeguard and pass along secret information, and figured out ways to break the coded messages of their enemies and determine what they had planned....Code Cracking for Kids includes a glassary, a list of online resources, and hands-on activities that allow kids to replicate early code devices and to learn several ciphers to encode and decode their own top-secret messages. Kids will: encrypt...

"While in Paris on business, Harvard symbologist Robert Langdon receives an urgent late-night phone call: the elderly curator of the Louvre has been murdered inside the museum. Near the body, police have found a baffling cipher. While working to solve the enigmatic riddle, Langdon is stunned to discover it leads to a trail of clues hidden in the works of Da Vinci -- clues visible for all to see -- yet ingeniously disguised by the painter. The stakes...

"Elizebeth Friedman (1892–1980) [was] a brilliant American code breaker who smashed Nazi spy rings, took down gangsters, and created the CIA's first cryptology unit. Her story came to light when her secret papers were finally declassified in 2015. From thwarting notorious rumrunners with only paper and pencil to “counter-spying into the minds and activities of” Nazis, Elizebeth held a pivotal role in the early days of US cryptology. No code...

A battle-weary Marine is assigned to guard - and ultimately befriends - a young Navajo soldier who has been trained to be a code talker. This code, the Navajo code, and the men who knew the code, were to be guarded as they went into action. It was the unspoken duty of the Marine to kill the Navajo soldier before he could be taken prisoner of war by the Japanese. This is the one wartime code that was never broken by the enemy.

"Charlotte likes cracking codes together with her great-grandmother. On her ninth birthday, she has to solve a few puzzles to find Nana's gift. Charlotte goes on a fun quest--and learns about her grandma's interesting past along the way."--Inside front jacket flap.