Perry Mason - Season 9 Episode 11 -

Police Sgt. Dave Wolfe warns Joe Oliver to stay away from his kid sister, Susan. Now Susan's been beaten up in her apartment, Oliver's been shot to death, and Dave is being charged with murder. Dave says someone knocked him out and used his gun on Oliver, and when Perry investigates, he discovers that six people in the building heard Susan's cries, but did nothing to help her.