It's 1943. The   Allies are determined to break Hitler's grip on occupied Europe, and plan an   all-out assault on Sicily; but they face an impossible challenge -- how to   protect a massive invasion force from potential massacre. It falls to two   remarkable intelligence officers, Ewen Montagu (Colin Firth) and Charles   Cholmondeley (Matthew Macfadyen) to dream the most inspired and improbable   disinformation strategy of the war -- centered on the most unlikely of secret   agents: a dead man. Operation Mincemeat is the extraordinary and true story   of an idea that hoped to alter the course of the war -- defying logic,   risking countless thousands of lives, and testing the nerves of its creators   to breaking point.