In 2014, the investigative program 'Devoir d'Enquête' dedicated an entire episode to the bloodiest and most enigmatic criminal case in our judicial history. Who are the Brabant Killers? More than thirty years after the first attacks, the justice system is unable to put names to those who were referred to as the 'mad killers.' Are they predators or terrorists? Ordinary criminals or destabilized by an occult force? The motives of these men who murdered 28 people from 1982 to 1985 remain controversial. No less than six successive investigating judges and dozens of detectives have explored every possible lead, even the most improbable ones, without solving the mystery. But today, according to officials from the Brabant Wallon unit, the determination to find answers remains unwavering, and the latest investigations could lead to the unraveling of the truth. Is it a genuine hope or an attempt to cover up a glaring failure? Journalists from the legal magazine conducted an investigation into the investigation, shedding light on exclusive testimonies and documents. The final steps of the inquiry conducted by Judge Martine Michel will be dissected: the far-right track, Jean-Marie Tinck, manipulations by former investigators, and more.