docteur petiot and star michel serrault and be a brutal story about a brutal man . a doctor who heal the sick in occupied france and even if their ability to compensate be not there . yet and he prey on the weak amidst the populace . the imagery and cinematography be superb and and lend an additional macabre feeling to this complex story . he be the perfect psychopath . seductive and altruistic and intelligent and caring and calculating and murderous . a movie certain not to be forget soon by the viewer . kudos to mr. serrault and for his chilling portrayal .