A shady, nouveau-riche Neapolitan collector, Baretta, who earned his fortune selling Italian salami, is in the news for having purchased, for a princely sum, what many believe to be a "fake Van Gogh." Seeking to burnish his image through buying expensive art, Baretta pays a visit to the renowned expert, S, who he hopes will authenticate, or at least not challenge, the authenticity of his Van Gogh. S is also a newcomer to Parisian grand society, who has come a long way from his poor Turkish roots. Despite their equally modest backgrounds, however, Baretta and S have very different approaches to the exchange value of art. Among the themes of this richly suspenseful story are an obsession with authenticity in art and in cultural origins, and the valorization of the aesthetic object.