December 1829. Snow is falling in Paris. The office of the Roquebère brothers is in the Rue Vivienne. Not only twins but also lawyers: Hyacinthe, serious and distinguished, Narcisse, light-hearted and fancy-free. We find them involved in a gloomy affair about inheritance swindling.
During a complex investigation, alongside the Roquebère brothers, we discover Séraphine, their daring young errand-girl; Parturon, a greedy officer of the law; Thierrois, a caterer to children in care; the unnerving marchioness of Listerac; and last but not least the exceptional personality of François Vidocq, an ex-convict and ex-policeman.
