The Snare by Rafael Sabatini Fiction Action & Adventure

<p><strong>The problem was traitors in high places: traitors secretly opposing his methods and playing the spy for the enemy.</strong> All depended on secrecy and unity of action. And then a young British officer made a moronic blunder and gave the plotters their chance to upset the delicate balance. Their influence caused the Portuguese Council of Regency to demand that the culprit be made a scapegoat. He was at large -- and the man responsible for his capture and execution was his own brother-in-law Sir Terrence Amoy. Amoy British adjutant-general at Lisbon.</p>