The Monster movie plot

A strange man , Loris Ziccardi , likes to peep at women's skirts, so he is suspected of being a suspect in a series of local women's rape and murder cases. The area is under the jurisdiction of Detective Frostrube, who, on the advice of a psychiatrist, set up a trap to trap the killer. The first is to send a sexy policewoman Jessica to live in Loris Ziccardi's apartment as an undercover agent to investigate his perverted behavior nearby, but no crime has occurred. So Detective Ruby orders Jessica to seduce Loris Ziccardi, which only gets worse.