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.

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...

After returning to America, Maggie Hope undertakes an investigation into the murder of one of Eleanor Roosevelts aides, in which she must use her code-breaking and espionage skills to outmaneuver a dangerous Nazi plot.

Joining the elite Bletchley Park codebreaking team during World War II, three women from very different walks of life uncover a spy's dangerous agenda years later against the backdrop of the royal wedding of Elizabeth and Philip. "1940. As England prepares to fight the Nazis, three very different women answer the call to mysterious country estate Bletchley Park, where the best minds in Britain train to break German military codes. Vivacious debutante...

Spring 1942. The United States is reeling from the blow the Japanese inflicted at Pearl Harbor. But the Americans are determined to turn the tide. The key comes from Commander Joe Rochefort, a little known “code breaker” who cracks the Japanese military encryption. With Rochefort’s astonishing discovery, Admiral Chester Nimitz will know precisely what the Japanese are planning. But the battle to counter those plans must still be fought. From...

"When agoraphobic genius Salem Wiley lands her dream job as an FBI cryptanalyst, she vows never to return to the witch hunt underworld, where ancient secrets encrypted by hunted women have the power to rewrite history. Her resolve disappears when sweet Mercy Mayfair, the child she is pledged to protect, is kidnapped. With the help of the enigmatic Agent Lucan Stone, Salem is forced to code hunt in Ireland, England, and Scotland to keep the girl alive....

"Salem Wiley is a genius cryptanalyst, courted by the world's top security agencies ever since making a breakthrough discovery in her field of quantum computing. She's also an agoraphobe, shackled to a narrow routine by her fear of public places. When her mother's disappearance is linked to a plot to assassinate the country's first viable female presidential candidate, Salem finds herself both target and detective in a modern-day witch hunt. Drawn...

"1926, Washington, D. C. In the Prohibition Rum Wars, the Coast Guard is losing. Eleven million gallons of illegal liquor a year have created a booming smuggling economy, with criminals wreaking havoc on American cities, and everyday citizens thumbing their noses at Uncle Sam. But the Coast Guard has a new, secret weapon-one of the husband-and-wife pair who invented cryptanalysis and trained Great War soldiers-to crack smuggler codes, intercept traffic,...