2nd Chance reconvenes the Women's Murder Club, four friends (a detective, a reporter, an assistant district attorney, and a medical examiner) who used their networking skills, feminine intuition, and professional wiles to solve a baffling series of murders in "1st to Die," This time, the murders of two African Americans, a little girl and an old woman, bear all the signs of a serial killer for Lindsay Boxer, newly promoted to lieutenant of San Francisco's homicide squad. But there's an odd detail she finds even more disturbing: both victims were related to city cops.