Detective Sergeant Harry Challenor is undoubtedly one of the most controversial policeman of all time. Born into grinding poverty in 1922, Challenor served with the prestigious Special Air Service during World War Two, was parachuted behind enemy lines, was captured twice, escaped twice and was awarded the Military Medal for his bravery. Joining the postwar Metropolitan Police, Challenor began his one-man crime crusade. After four years...