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.
Paul Naschy
Inspector Scaporella
María Kosty
Ingrid
Erika Blanc
Silvana Scaporella
Ángel Aranda
Pietro Volpini
Ricardo Merino
Edmundo
Susana Mayo
Claudia Volpini
Eduardo Calvo
Professor Sandro Campitelli
Mariano Vidal Molina
Police Commissioner
