Writer-director Romuald Karmaker made a stunning impact with this riveting and gruesome historical drama based on the case of a 1920s German serial killer. Fritz Haarmann (Gotz George) has finally been caught after years of preying on boys and young men. His methods included sodomizing his victims, biting their necks like a vampire, then killing them and cutting their bodies into little pieces. Before Haarmann can stand trial, it must be determined whether or not he is sane. A psychiatrist is assigned to the case. He interviews the killer in a small room at an insane asylum where Haarmann has been temporarily placed. The film's dialogue is taken directly from the original transcripts of the actual interview. During the course of the interview, Haarmann details his murderous methods and gradually reveals his motivation. The title is translated as The Deathmaker.
~ Michael Betzold, All Movie Guide