A pair of detectives investigate stalkers in Los Angeles. Strong and focused, Lt. Beth Davis is an expert in the field of repeated harassment, driven by personal experience of being a victim. She heads the LAPD's Threat Assessment Unit, which investigates cases of stalking -- including voyeurism, cyberharassment and romantic fixation. The history of recent transfer Jack Larsen -- whose personality and questionable behavior have been an issue in the p… meer