Steve Sheinkin

Remember, you are bound by the Official Secrets Act… Summer, 1940. Nineteen-year-old Jakob Novis and his quirky younger sister Lizzie share a love of riddles and puzzles. And now they’re living inside of one. The quarrelsome siblings find themselves amidst one of the greatest secrets of World War II—Britain’s eccentric codebreaking factory at Bletchley Park. As Jakob joins Bletchley’s top...

In 1872, a pair of scheming prospectors sold a non-existent American diamond deposit to prominent businessmen with the promise of fame, fortune, and riches beyond their wildest dreams. From Arizona to Wyoming, thousands of miners and prospectors flocked to the western United States in search of diamond deposits, triggering one of the biggest—and briefest—diamond prospecting crazes in United States history....