The Devil Inside describe story about a lady name Isabella, searching a reason why her mother is gone crazy and what kind of sorcery is her mum dealing with it. So, the main character is Isabella and the camera and camera setting "in charge" by a person called Michael, and Isabella bump into 2 priest called Ben and David, so this is how the real journey begin in Italy visiting Maria (Isabella Mum) Trip.
Bonnie Morgan as Rosa, typical person who can twist and reflex her body until "godlike" non other than Bonnie the Contortionist lol. When a person get possess by a demon or some filthy soul, this movie will show a very fine example how was it looks like. I didn't watch Exorcist movie last time because I am so coward and no guts to watch this kind of movie. I believe when a person lost control, he or she might go and bite the person and try to run away from it, but this movie is too gentle.