Tenderness of the Wolves (1973)

In post-war Ruhr, criminal-turned-police-informant Fritz Haarmann exploits his position to lure young boys to his attic, where he assaults, kills, and dismembers them—turning their remains into sausages that win him local favor. Even Inspector Braun, investigating a missing boy, unknowingly enjoys Haarmann’s grisly offerings until a neighbor provides a crucial lead. A film that blends thriller and horror, evoking Fritz Lang’s M and Hitchcock’s Psycho, with Raab portraying Haarmann as a grotesque fusion of Peter Lorre and Nosferatu.