All About Evil

All About Evil is a 2010 American black comedy slasher film and marks the feature film directorial debut of Joshua Grannell, who also wrote the script. The film stars Natasha Lyonne as an unhinged theatre owner who begins making snuff films and screening them at her decrepit San Francisco theater — presenting them as fictional works — in order to prevent the theater from going bankrupt.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.