Sharpe's Sword 
  Book 
                A compelling adventure of war, revenge and treachery.
                Richard Sharpe was once again at war. But this time his enemy
                  was a single man - the ruthless, sadistic Colonel Leroux. Sharpe's
                  mission was to safeguard El Mirador, the spy whose network
                  of agents was vital to the British victory.
                So Sharpe must enter a new world of political and military
                  intrigue. And in the unfamiliar surroundings of aristocratic
                  Spanish society, his only guide is the beautiful Marquesa -
                  a woman with her own secrets to conceal.