Avsnitt 4

After a women is stabbed to death outside her apartment building, and no witnesses are willing to speak to the police, Mannion moves in, hoping to gain the residents' trust. The housing project has been a dangerous place to live for a long time and the residents are weary of the police, who never seem to be there when they need them . Now, Mannion must convince them that this is not a media stunt -- he honestly wants to make their lives safer -- and that they need to speak up before the killer strikes again. (from CBS)