SOLVED. WW II espionage & misinformation [s]

[Beverlyc]

I'm looking for a book about the Allies using a drowned man with misguiding info in his pocket to provide inaccurate info to the Germans regarding D-Day plans. The man was already deceased, the wrong plans were planted on him, and his body was set adrift so that it would come ashore and be discovered my the enemy.

[Barbara]

Operation Mincemeat by Ben Macintyre (nonfiction).