Spooks weighing in with all kinds of spin, and all I can think of is "Operation Mincemeat: How a Dead Man and a Bizarre Plan Fooled the Nazis and Assured an Allied Victory" by Ben Macintyre.
Operation Mincemeat was a British intelligence operation in 1943 designed to mislead the Nazis about the location of the upcoming Allied invasion.
The plan involved using the body of a homeless man, Glyndwr Michael, who was dressed as a British officer named Major William Martin.
This fictitious officer was equipped with fake personal items and top-secret letters that suggested the Allies were planning to invade Greece and Sardinia, not Sicily, which was the actual target.
The body was placed in the sea off the coast of Spain, where it was intended to be found by the Nazis through their intelligence networks in neutral Spain. The operation was successful in diverting German forces away from Sicily, contributing to the success of the invasion.