S13E9: The Girl Who Knew Too Much/The Guardian

In Dallas, an unidentified girl is found brutally shot in a field. Detectives Scott Sayers and Esteban Montenegro discover that she may have been killed for her silence. Then in Cleveland, a young father is shot in the head trying to break up a fight. Without any leads, Detectives Ignatius Sowa and Raymond Diaz must rely on an outraged community to help track down his killers.