This documentary provides viewers with highly personal insights from a group of Native American war heroes regarding their service on behalf of the United States and the Navajo Nation. The secret code these marines developed, based on the unwritten Navaho language, was never broken, giving American troops an upper hand in many battles that ultimately led to Japan's surrender in 1945.

The fascinating story of Elizebeth Smith Friedman, the groundbreaking cryptanalyst whose painstaking work decoding thousands of messages for the U.S. government would send infamous gangsters to prison and bring down a massive, near-invisible Nazi spy ring in WWII. A suburban wife and mother who led a secret double life, her remarkable contributions to the science of cryptology would only come to light decades after her death when classified government...