In 1943, a top-secret British naval intelligence committee, including savvy barrister Ewen Montagu (Colin Firth), came up with an ingenious way to mislead Germany about troop movements. The plan, mesmerizingly executed in this film, was to dress a dead man as a military courier, give him fake documents, set the body adrift in the ocean (as if he’d drowned after parachuting out of a plane) and hope he was found and his “intel” sent to Hitler.

The wrinkle in this telling: Montagu and MI5 agent Charles Cholmondeley (Matthew Macfadyen) both fall for ambitious secretary Jean Leslie (Kelly Macdonald).

Says Firth, “It becomes a complex tussle of unresolved, unexpressed emotions, fed by the high stakes.”

Operation Mincemeat, Original Film Debut, Wednesday, May 11, Netflix