Between January 1996 and July 1997, the so-called Butcher of Mons murdered five women near the Belgian city of Mons. The serial killer, still on the loose to this day, is the dark epicenter of the pitch-black horror thriller Megalomaniac. Director Karim Ouelhaj fantasizes about the butcher’s children, who both live in his dilapidated house. While son Félix follows in his father’s footsteps, daughter Martha becomes a victim of violence herself. Megalomaniac is as bleak as it is polemical—one of the most controversial films of the festival.