Enigma (2001) is a Second World War romantic thriller directed by Michael Apted. The story takes place in March 1943 with the war at its height and is loosely based on actual events. The cryptanalysts at Bletchley Park, a top secret site outside London where all varieties of nerds, Bolsheviks, and math whizzes work at breaking down German communications. They have a problem: the Nazi U-boats have increased the security of key-changing of their Enigma machine ciphers, leading to a blackout in the flow of naval vital signals intelligence. This could spell disaster in the critical Battle of the Atlantic, on whose outcome Britain's survival depends. The British cryptanalysts have cracked the "shark" cipher before, and they need to do it again in order to keep track of U-boat locations and steer shipping convoys out of their way. The plot follows the fictional character of the fragile but brilliant working class mathematician Tom Jericho (played by Dougray Scott). He is returned to Bletchley Park from Cambridge to assist with the crisis after a period of recuperation bought on by overwork earlier in the war combined with an unhappy love affair, which led to him having a nervous breakdown. Jericho immediately tries to see his lover again and finds she has mysteriously disappeared. He enlists the help of Hester Wallace (Kate Winslet) to follow the trail of clues and learn what has happened to her. Mr. Jericho and Miss Wallace, as they coldly call each other, repeatedly break the <b>...</b>