Small-town librarian Patton Harcourt must trust in a mysterious assassin named Nemo to aid her in deciphering a seventy-five year old message encoded by Nazis on an Enigma machine, which may unlock the secret of Heinrich Himmler's research into alchemy.

"A nonfiction manuscript for young readers about a group of Allied spies and codebreakers that cracked the Nazis's infamous cypher, allowing them to read secret military messages and turn the tide of World War II. During WWII, as the Germans waged war, every Nazi plan, every attack, was sent over radio. But to the Allies listening in, the messages sounded like gibberish. The communications were encoded with a powerful cypher-unless you could unlock...

The gripping tale of the U.S. Navy task force's daring feat on the eve of D-Day when they successfully captured the Nazi submarine U-505, along with its crew, technology, encryption codes and an Enigma cipher machine.

"A straightforward biography of famous British mathematician and computer scientist Alan Turing."--

"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...