Los Angeles police are searching for a serial killer dubbed the "Grim Sleeper," who is thought to have killed 11 people. The killer, who police say murdered from 1985 to 2007, was nicknamed the Grim Sleeper because he seemed to take a break between homicides, police said. Authorities this week released a 9-1-1 tape recorded shortly after a killing in 1987, in the hope of producing clues.
