警方介入了一个少女的自杀案件，随着案情的揭露，警察发现了幕后似乎有一个犯罪集团和更多骇人的案件，在进一步调查时他们遇见了这些连环案件的杀手并实施了追捕……

Here's another one outside the horror genre for director Lucio Fulci. He crafts a brutally biting, if disjointed Italian crime melodrama that serves to make you squirm in it gratuitous acts of extremely depraved violence and sleaziness. Fulci definitely left his calling card on this one, with many unforgettably unflinching nasty moments (like an uncomfortable face-melting scene). The superfluous gore and mean-spirited nature is great, but a lack of any real tension-building does hurt it. The twisty story is frank and unspectacular even with its shifty chain of bleak events and the script is weakly penned (the unsuitable humour when included falling flat), but being broken up by its impulsively vivid action stunts (nice use of slow-motion too) and gorgeous Naples' backdrop, leaves quite a hypnotic imprint. Sergio Salvati's brashly sharp and tight camera-work, interlocks with Fulci's kinetic visual bursts and rounding it off nicely is composer Fabio Frizzi's ever-changing, saucy music score that doesn't lye down. Performances are workably tailored. There's a humanely chiselled and honest performance by Fabio Testi. Marcel Bozuffi makes for a great smarmy, calculating French Mafia Don trying to take over Testi's character's turf. Ivana Monti, Ferdinand Murolo, Saverio Marconi and Guido Alberti provide able support. Quite an edgy, blunt and vicious crime joint that basically gets it kicks off its effectively rousing, if scandalous violence than anything more.