Simultaneously, a serial killer is terrorizing the city. Due to a series of absurdly misconstrued events—including a misunderstanding at a party and an incident involving a chainsaw—police profilers mistakenly identify Loris as the "Mozart of vice," the violent predator they have been hunting for over a decade. To catch him "red-handed," the authorities assign undercover policewoman (Nicoletta Braschi) to move in with him and provoke him into committing a crime. Themes and Satire

Based on the title provided, this appears to be the 1994 Italian horror film , directed by and starring Roberto Benigni.

Finding a version with English subtitles is essential, as much of the humor relies on the interplay between Benigni’s frantic dialogue and physical slapstick. The Monster - Full Cast & Crew - TV Guide