Friend or Foe / Code of Silence

In Dallas, Det. Dan Lusty and the homicide squad find a man with his throat slashed floating in a creek. The mystery deepens when they dig deeper into the victim's personal life. And in Memphis, Sgt. Kevin Lundy and his team investigate the murder of a 19-year-old man gunned down in the middle of a street. They soon find a witness whose story turns the investigation on its head.