A serial killer has killed 10 young black women and one man in Los Angeles since 1985. The killer went dormant for years, occasionally reemerging. Eight unsolved homicides from the 1980s show links to DNA tests and ballistics from a 2002 case, then one in 2003 and another in 2007. Police knew a deadly stalker was in their midst a year ago, and ordered a special task force. But no one told the public or families of the victims until the story broke in the L.A. Weekly. The Takeaway talks to journalist Christine Pelisek about a killer in L.A. who has been around for 22 years, lays dormant and then strikes, and is now known as the “Grim Sleeper."