Cotton Malone battles a group of families whose influence dates back to U.S. Constitution and who seek to crack a code devised by Thomas Jefferson himself in their quest for power.

Told in multiple voices, fifteen-year-old Jamaican Louisa Adair uncovers an Enigma machine in the small Scottish village where she cares for an elderly German woman, and helps solve a puzzle that could turn the tide of World War II.

1940. As England prepares to fight the Nazis, three very different women answer the call to Bletchley Park, where the best minds in Britain train to break German military codes. Osla puts her fluent German to use as a translator of decoded enemy secrets. Mab works the legendary codebreaking machines and looks for a socially advantageous husband. Beth's shyness conceals a brilliant facility with puzzles, and she becomes one of the Park's few female...

Sarah and Aidan begin to decipher a mysterious document that refers to the origins of Peter Pan and are suddenly pursued by a being that can take any form and will stop at nothing to get what it wants from them.

While wealth can be lost or stolen, and even found again -- if husband-and wife treasure-hunters Sam and Remi Fargo are on the case -- a long-forgotten map is just the stuff of bedtime stories. Like Long John Silver and Robin Hood. But when Sam and Remi try the unthinkable, a relaxing vacation and a visit to a rare bookstore, a very real dead body suggests what they hold in their hands is an actual, ink on paper guide to a historic fortune. When the...

When Iranian-American Kamran Smith learns that his big brother, Darius, has been labelled a terrorist, he sets out to piece together the codes and clues that will save his brother's life and his country from a deadly terrorist attack.

Decades ago, Albert Einstein devised an equation that could benefit all life on earth-- or destroy it. Now a diabolical group known as the Furies are hunting for the equation. In desperation, a team of CIA agents drags Charlie Thorne into the hunt. Charlie is a genius... a thief... and not old enough to drive. But she must crack a complex code created by Einstein himself, survive in a world where no one can be trusted, and fight to keep the last equation...