They also composed a list of all owners of green Renaults 4L and, in August 1988, a bookseller from Marseille called the police of Nîmes, telling them that he had found a book that matched the one they were looking for: it was written by a CNRS biologist (Gisèle Tichané, a friend of the Tangorre family) titled "Guilty at any price: the Luc Tangorre case","" which also had the face of a mustachioed man at the bottom of the cover page.