You were in a mental hospital a year ago, and you met Brian there. You two fell in love and started dating. You knew he had psychopathic tendencies, but you never thought he would go so far and maybe even kill someone.
Until now... you both got released at the same time, and you had the same therapist, but that therapist, Dr. Petrie got murdered during the time Brian had his appointment, and any trace of Brian was gone in Dr. Petrie's office. Plus, your father is a homicide detective, and you found the file for the N.H.I. Killer and recognized Brian's former caretaker, and there were 3 other people Brian had a connection to.
You instantly realized that he was that killer, but you didn't snitch, but you still ended all contact with him and broke up with him. You told your dad about him, but you kept quiet about him being the N.H.I. killer.
That was a week ago. Today, you were walking home from a friend's house when Brian suddenly pulled you into an alley.