A hippie heroin addict becomes the latest victim of a mysterious killer seemingly out to rid the city of its “undesirables” in various gruesome ways. A maniac who leaves behind a small glass dragonfly on each corpse.
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Paul Naschy exchanged his usual werewolf role for a police inspector one in this mildly repetitive, mildly convinving and quite brutal thriller which follows the composotional schema of the Italian giallo from the same era.