"Who is the deranged maniac persecuting and mentally torturing celebrated rock musician Roberto Tobias (MICHAEL BRANDON)? First he's implicated in a horrifying stabbing and is soon surrounded by other senseless slaughter. The last strange images captured on one murder victim's eye retina contain the only clue to the demented criminal manipulator. And their identity will take Roberto over the edge of sanity to a shock horror peak in DARIO ARGENTO'S classic giallo chiller.
This homicidal frenzy completed ARGENTO'S revered 'Animal' trilogy (alongside THE BIRD WITH THE CRYSTAL PLUMAGE and CAT O' NINE TAILS) that dubbed him 'The Italian Hitchcock', leading to SUSPIRIA and his worldwide 'Master of Horror' reputation. And ARGENTO'S unmistakable flair for creating fear in lavish style is on stunning show in this slick, sick primal scream - with a shattering slow-motion climax given further operatic violence by one of genius ENNIO MORRICONE'S most memorable scores."
Synopsis by Alan Jones, author of 'Profondo Argento'.