Following the well-researched and popular book "Station X - Decoding Nazi Secrets" by Micheal Smith 1999, this film explains the historical circumstances and code-breaking methods that took place at Bletchley Park (BP) during WWII. Mixing historical clips, dramatic recreations and first-person interviews makes the production lively and exciting as the viewer is taken through the up and downs that challenged the group over the course of the war.For the 5,000 men and women who worked there during WWII, the "Ultra" Most Secret designation served this organization too well - even after it was declassified in the 1970's. Few have known or understood that its heroic and remarkable accomplishments were the most important in the whole war for the Allied powers and a primary reason for victory over Hitler and his Axis.