This book is the outcome of a difficult investigation, and a very remarkable story it is too. It was at Beaulieu that a large number of agents from Britain and the Nazi-occupied countries of Europe were trained in the delicate arts of secret inks, coding, clandestine communications and black propoganda, along with such nefarious skills as silent killing, housebreaking, safe-blowing, forgery, unattributable sabotage and survival techniques. And they were taught by some extraordinary characters including former spies, a professional burglar and the infamous Kim Philby, who played a significant role in the design of the curriculum.