A book was published in November 1999 titled: "The X-Files: What Belgium Was Not Supposed to Know About the Dutroux Affair". It was written by two journalists from the Flemish Belgian newspaper "De Morgen", Annemie Bulte and Douglas De Coninck and another journalist from the French Belgian newspaper "Journal du Mardi", Marie-Jeanne Van Heeswyck. It claimed that the X witnesses were much more believable than stated by the media. But it also stated that there had been substantial efforts by the magistrates and senior police officials to demolish the testimony of the X-witnesses. The father of a police officer that was murdered while investigating a car smuggling ring, Judge Guy Poncelet, said that the book was brilliant and convincing. He said he believed that crucial evidence had been downplayed by the authorities.