In In the Shadows of Paris, the fifth installment in this c'est magnifique Victor Legris series by Claude Izner, a murderer is at large in belle-epoque Paris. In the turbulent Parisian summer of 1893, Victor Legris has vowed to his fiancée to give up the dangerous hobby of amateur sleuthing to concentrate on selling books. But a killer is at large, leaving mysterious references to a leopard in his notes, and intent on revenge for events that took place many years before during the Commune. When a bookbinder friend of Victor's dies in a house fire that does not seem to be accidental, the young bookseller feels impelled to resume his detective work and uncover the identity of the Batignolles predator. Alongside his trusty assistant Jojo, Victor embarks on a new investigation in the bourgeois quarters of Paris, where scoundrels abound and streethawkers call out their wares among market stalls, under the bloody shadow of the Commune.