Criminal Minds Episode 6.20 Hanley Waters

Guilt and grief turn into violence when a Floridian woman, distraught over the death of her son, goes on a killing spree. The murders seem random at first, but the BAU team eventually learns that the UnSub is targeting heroes - police, firefighters, and EMT first responders. As the team races to uncover the mysteries surrounding our UnSub's tragic past, she attempts to exact vengeance on a world that was unable to save her baby boy.