The two not too bright second hand car dealers Paul Antonis and Marc De Laet, try to earn some extra money by selling paintings in the showroom. They do earn a little extra now and again, but no so much as Paul spend on his mistress Rita Coppens just before he gets murdered. At the scene of the crime John sees "Het Baronneke", Clément Goeminne. He's a spiv who lies and cheats people of their money all of his life. John believes that if he's in the neighborhood, he must have something to do with the murder. No matter how charming he may sell him self.