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. When a bookbinder friend of Victor's dies in a house fire that does not seem to be accidental, the young bookseller feels driven to resume his detective work. Also known as The Predator of Batignolles. 2012.