This sequel novel, set in January and February 1793, follows on from "The Scarlet Pimpernel". The League of the Scarlet Pimpernel has disguised themselves as a group of shabby second-rate musicians, in order to save an innocent family from death. But Citizen Chauvelin is hot on their heels, and still looking for revenge against his bitter enemy. The Pimpernel's plans are, however, complicated by betrayal of a trusted League member. Can the Pimpernel save the innocent family? Will Chauvelin have his revenge at last? Can Sir Percy escape death and dismay after treachery and betrayal?