Jack Aubrey commands HMS Worcester in the fleet blockading Toulon, where long months of discipline, illness and political irritation replace the excitement of independent cruising. Stephen Maturin continues his intelligence work while observing the human cost of service in an ageing ship.
A new assignment takes them into the Ionian Islands and the unstable politics of Ottoman-controlled Greece. Jack must negotiate alliances among local rulers while preparing for a naval confrontation in confined waters.