Dead North: A serial killer serves up victim as BBQ?

When Iron River, Michigan, police responded to a missing persons call, Chief Laura Frizzo had no idea it would start her on a years-long trail that would lead to a suspected serial killer. Kelly Cochran later told a detective she has murdered as many as 21 people, including two husbands. Frizzo, who lost her job as chief in a dispute with a city council member, is the host of an Investigative Discovery documentary about the case. Frizzo is Nancy Grace's guest in this episode, along with lawyer & psychologist Dr. Brian Russell, host of Investigation Discovery's "Fatal Vision" series, forensic expert Joseph Scott Morgan, and DailyMail.com's Sean Walsh.