The First 48 - Season 9 Episode 8 -

In Louisville, a murder hits close to home when Detective Rick Arnold learns that the victim of his most recent homicide case is the brother of a good friend. If Arnold is to track down the suspect, he needs to discern between lies and truth--and real names and aliases. In Harris County, a popular teenager is gunned down on a residential street. Deputy Cory Pool and his team must determine whether the shooting was self-defense--or murder.