Newly returned from years of secret work in Paris, Lieutenant Holcroft Blood must now face King James II's enemies on the gore-drenched battlefields of the British Isles. But after the victory at Sedgemoor – and its cruel aftermath, the Bloody Assizes, in which the Duke of Monmouth's rebellion was ruthlessly crushed – many powerful men have grown tired of Catholic James's brutal rule and seek to invite William, the Protestant Prince of Orange, to seize the thrones. While revolution brews in the gentlemen's clubs of London, Holcroft discovers that a sinister French agent, known only by his codename Narrey, intends to murder him. Worse, Holcroft must decide whether to join the conspirators – or remain loyal to his unpopular king.