Did the recent PBS broadcast of The Bletchley Circle pique your interest in World War II code-breaking? Enigma (2001), based on a novel by Robert Harris, is a thrilling story of secret service, cryptography, romance, and espionage. Kate Winslet and Dougray Scott star as those piecing together the disappearance of an alluring coworker who may have stolen sensitive information. Meanwhile, British intelligence officers must find a way to decode scrambled messages of the German military. Based on the true story of unlikely heroes and a technological breakthrough which changed the course of history, Enigma is a glimpse into the tense war waged in locked rooms with numbers and letters so that those on the fields, in the air, and on the seas could have a fighting chance.