In February 1942 RAF intelligence was baffled by a newly-identified radar network on the coast of Nazi-occupied Europe, codenamed Würzburg. The brilliant scientist Dr RV Jones proposed an assault to capture key components. The nearest accessible enemy set stood upon a steep cliff at Bruneval in Normandy. Winston Churchill enthused, as did Lord Louis Mountbatten, chief of Combined Operations. A company of the newly-formed Airborne Forces was committed to the operation, which took place on the night of 27/28 February. Max Hastings recounts this cliffhanging tale in a wealth of previously unchronicled detail. He portrays its remarkable personalities: the ‘boffin’ RV Jones; the peacock Mountbatten; the troubled husband of Daphne Du Maurier, and others. Seldom have so many fascinating personalities been brought together to fulfil a mission that became a front-page triumph in a season of British defeats.