'Grim Sleeper' Serial Killer Suspect Arrested 7.85K Hamilton Nolan 07/07/10 04:58PM Filed to: Crime Crime serial killers The grim sleeper Investigations La The LAPD has arrested a 57 year-old man in the case of "The Grim Sleeper" serial killer—suspected of killing and sexually assaulting eleven victims in the LA area from 1985 to 2007. The suspect's neighbors expressed shock. [LAT; Pic]