An uneasy peace reigns in France, but behind the scenes Catholics, Protestants and the agents of foreign powers are still locked in secretive, bloody combat as they struggle to control the country’s future. In this unstable atmosphere Pierre de Siorac again leaves his Perigord home for Paris, but his apparent employment as a doctor masks an even more serious and deadly occupation - as a spy working for King Henry IV, using fair means and foul to protect his rule and the peace of the realm.

As the plots against his king thicken, Pierre finds himself struggling to save not only his country, but the lives of his entire family. With his back to the wall, he will need a keen wit and a steady sword arm to fight his way to safety.

League of Spies is the fourth book in the swashbuckling Fortunes of Franceseries.