Say Uncle (S09E06)

The unfortunate story of a young boy who's mother has HIV, and so does he. The CSIs find that his kind uncle has been trying to protect him from his abusive mother. They are Korean and live in Koreatown, where people just do not talk, even when there is a shooting in the streets. The result is that the abusive mother shot the uncle, and the boy shot his mother in order to escape her abuse. (CBS TV Network)