Following the dramatic events of the Waffle House shootout, Colleen and Pruitt learn key information about the murder weapon from Darryl Ballinger, who also reveals that Aaron knows a lot more about the case than he initially let on. Meanwhile, Colleen and Pruitt learn that Arthur has not been honest about Robin’s final night, which puts Colleen in a difficult situation with Leland. Joan, convinced that Aaron killed her son, makes a dangerous decision to take things into her own hands.