The First 48 (2004) : 4x17

In Dallas, a woman is shot in while sitting in her car. Detective Eddie Ibarra and the homicide team focus in on two suspects swept up in a robbery investigation, and the pieces of the murder mystery begin to fall into place. In Detroit, a young woman and her daughter are shot dead in their apartment. Detective Ernie Wilson immediately gets the name of the shooter, but finding him is a game of cat and mouse.