Chapter 3 THE CASE OF JEAN LOUIS"MONSIEUR," CONTINUED the young girl, addressing Serge Rénine, "it was while I was spending the Easter holidays at Nice with my father that I made the acquaintance of Jean Louis d'Imbleval... ." Rénine interrupted her: "Excuse me, mademoiselle, but just now you spoke of this young man as Jean Louis Vaurois." "That's his name also," she said. "Has he two names then?" "I don't know ... I don't know anything about it," she said, with some embarrassment, "and that is why, by Hortense's advice, I came to ask for your help." This conversation was taking place in Rénine's flat on the Boulevard Haussmann, to which Hortense had brought her friend Geneviève Aymard, a slender, pretty little creature with a face over-shadowed by an expression of the greatest mel