The Mountain and the Molehill

It is May 1944 two weeks before Dday Britain stands poised for the longawaited invasion of France thousands of troops wait anxiously for the orders to come for embarkation MI5 is horrified to discover the topsecret codewords for the invasion suddenly appearing as clues in the Daily Telegraph crossword Two agents are immediately dispatched to confront the culprit the headmaster of a boys school in southern England