In 1943, from a windowless London basement office, two intelligence officers conceived a plan that was both simple & complicated—Operation Mincemeat. Purpose? To deceive the Nazis into thinking the Allies were planning to attack Europe by way of Greece or Sardinia, rather than Sicily, as the Nazis had assumed & the Allies ultimately chose. Charles Cholmondeley of MI5 & the British naval intelligence officer Ewen Montagu were very different. Cholmondeley was a dreamer seeking adventure. Montagu was an aristocratic, detail-oriented barrister.