THE ENIGMA STRATEGY

While a vanquished British Army escapes across the Channel from Dunkirk beaches, in London, Flight Lieutenant Bart Robbins, R.A.F., American volunteer Spitfire driver, decks an Air Commodore in self defense and finds himself sentenced to 20 years' imprisonment.

Later, when he is offered a full pardon and transfer to the U.S. Navy--if he will first fly a chancy mission to pick up a stolen Nazi Enigma coding/decoding Machine in enemy territory--he decides to risk it. Even when he discovers he ...