According to friends, the ex-cop had a tendency to nurture grievances. A former girlfriend, Denise Jensen, told the Los Angeles Times that Dorner could turn on people abruptly. A woman who rented a room from him claimed that she was kicked out when she turned down his sexual advances. And his training record at the LAPD stated he had physically assaulted other recruits. So was Dorner the victim of a conspiracy? Or was he just an angry man with an extreme sense of victimhood?
On February 3, 2013, Dorner, an expert marksman, took aim at 28-year-old Monica Quan, the daughter of Randal Quan – the retired police captain and lawyer who had represented him during his dismissal hearing. She was seated in her white Kia Optima in a parking lot at the time. Next to her was 26-year-old Keith Lawrence, her fiancé. Dorner opened fire, killing them both. His reign of terror had begun.