"Violent Naples" is the second part of a loose trilogy of Italian crime films (poliziotteschi) about Commissario Betti, a Dirty Harry-style cop who is out to clean up the "violent" cities of Italy.
"Naples" is the only part of the trilogy made by someone other than Marino Girolani: for this second entry it's the infamous Umberto Lenzi in the director's chair, a filmmaker better known for his boundary-pushing gore films like the widely-banned "Cannibal Ferox" and other such delights.
If nothing else, "Violent Naples" shows that Umberto Lenzi was a splendid action filmmaker. Car and motorcycle chase scenes in this movie are extraordinarily well done, with Lenzi employing point-of-view shots and creative camera angles for exhilarating results.
The movie has a few other notable moments, such as a scene where a crooked jeweler pretends to flush a ring down the toilet, and our hero shows that it was a trick with a little tray in the bowl (apparently a common trick as well? How many jewelers make a habit of taking their customers into the bathroom?) and another scene where a woman has her face smashed against the side of a speeding train.
Most of the fisticuffs in the movie - and there are a lot - look like people punching air, but there are other more violent moments apart from the above, such as a man being shot with a machine gun.
Unfortunately, the movie has the same problems "Violent Rome" had: as the protagonist, Maurizio Merli makes absolutely no impression, and the movie has very little plot to string the violence and chase scenes together.
As such it was kind of an endurance contest sitting this one out, waiting for the next awesome chase scene or interesting moment, but Lenzi's entry in this trilogy is still the best, simply by virtue of having these things in it, and making them worth waiting for.
