Scorned

Scorned is an American psychological thriller directed by Mark Jones and written by Jones and Sadie Katz. It was released in November 2013 in South Korea, and on February 4, 2014 in the United States. The film stars AnnaLynne McCord, Billy Zane and Viva Bianca. The story is about a woman who discovers her boyfriend is having an affair with her best friend. She goes crazy and decides to take revenge on them.

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

Poster © the film's rights holders.