So I saw just the last 20-30 minutes of this movie maybe about 3 years ago in passing on cable. It seemed like the main chick had been kidnapped by either a serial killer or just simply a trained killer and apparently she had escaped and he was hunting her down. Where I saw from she was in what looked like a motel room or something with a few dumb looking college types and it was like there were holding her against her will and the kidnapper was coming and he began killing them all off. She kept getting flashbacks of the kidnapper training her to survive or to kill and she began using what she remembered to fight him off and I think she killed him in the end. I really hope this helps.