Five best books about spies in Britain

For the Wall Street Journal, former MI5 director-general Stella Rimington named a five best list of books about spies in Britain.One book on her list:Shot in the Towerby Leonard SellarsLeo Cooper, 1997This humane and touching book describes the fate of 10 men who came to England to spy for Germany before World War I. They discovered little of value before they were caught, tried and shot in the