Documentary featuring dramatic reconstructions and interviews with historians to examine the network of spymasters and secret agents that helped protect Elizabeth I from assassination, terror and treason for more than 40 years. The first edition reveals how the pope's declaration of Elizabeth as a heretic 12 years into her reign set England's Catholics against her, leading the queen to charge William Cecil with the task of stopping assassins getting through, and the huge espionage network he established saw his spies break Catholic conspiracies at home and abroad.