During the 1920s Herbert O. Yardley was chief of the first peacetime cryptanalytic organization in the United States, the ancestor of today's National Security

The first novel in a brand-new alternate history series where Teddy Roosevelt is president for a second time right before WWI breaks out, and on his side is the

In his first book since the bestselling Fermat's Enigma, Simon Singh offers the first sweeping history of encryption, tracing its evolution and revealing the dr

THE STORY: After five intense years of study in Moscow, Andrei returns home to his faithful guardian Igor and rekindles his attachment to Tanya, his childhood l

In the last three years a covert archaeological search has taken place at Giza to locate the Hall of Records under the Sphinx and also find a reputed secret roo