As the nineteenth century draws to a close, war is in the air, and influenza is sweeping the globe. After twenty years as a gentleman, Montmorency is glad to be free of Scarper, his wretched alter-ego. However, when Montmorency's young friend Frank finds himself caught in the middle of a murderous political plot, Montmorency may have no choice but to call upon none other than Scarper for help. Follow Montmorency, Fox-Selwyn, Dr. Farcett, and a whole new generation of characters on their travels from London to Scotland, Italy and America.