A killer is cleaning up the streets of Milan by murdering those considered as deviant. An ornamental dragonfly, soaked in the blood of the victim, is left on each body.
- Release Date: September 17, 1975
- Runtime: 85 minutes
- Production countries: Spain
- Original Title: Una libélula para cada muerto
- Original Language: español (Spanish)
Actors: Erika Blanc, Paul Naschy, María Kosty, Ángel Aranda, Ricardo Merino