An Act of Violence Quincy M.E. : Season 8 Episode 22

An old lady is attacked and killed in her own apartment. Quincy is horrified that someone could so callously attack an old woman and is determined to find evidence that will convict the killer. Later, after an evening visit to her apartment looking for more evidence Quincy himself is attacked and mugged, leaving him scared to go out in the dark and making him jump at every sound.