This is a very very mild movie as far as violence and gore goes. Most of it is just implied violence, like knocking down a person the camera pulls back and the killer is "stabbing" at the body with added sound effect. Right up to the last 5 seconds of the movie then it gets to be pretty intense.

There are a lot of swearing, but honestly that is likely the most intense part of the movie.

Smoking cigarettes is it.

This movie is visually tame enough to be a rated PG-13 movie if you cut the last five seconds and remove the swearing.