The trial in the so-called Grim Sleeper serial killings started downtown yesterday. The Grim Sleeper suspect is Lonnie Franklin, a former city garbage man. He’s accused of murdering 10 women in South L.A. over 23 years. We get a refresher on the case and a primer on what to expect at the trial from the journalist who first broke the story of the Grim Sleeper nine years ago.