The assassin in the Marais

the long version

"Paris, Spring 1892. Intrepid bookseller Victor Legris stumbles upon a new case to investigate when his business partner Kenji Mori's apartment is burgled. Curiously, the only item stolen is a decorative goblet of little value. But on learning that two people who were connected to the goblet have been murdered, Victor becomes convinced of its secret significance. He launches himself into the investigation, which takes him through the underbelly of Paris, in hot pursuit of the goblet as it is thrown in the garbage, picked up by a rag collector, and resold by several antique merchants, all the while leaving more dead bodies in its wake."--From publisher's information.