A Dragonfly for Each Corpse

Someone in Milan is killing the people he considers deviant, and he leaves an ornamental dragonfly soaked in each victim's blood on the body. Inspector Scaporella (Paul Naschy) works the case, with Silvana Scaporella (Erika Blanc) and Ingrid (María Kosty) among the figures around it. León Klimovsky builds the story on a killer who has decided who deserves to live, and on the damage that kind of certainty does.