MURDERED: Deanna Cook

When 32-year-old Deanna Cook is found murdered in her home, her family automatically suspects her ex-husband. But despite a swift arrest, the investigation into her homicide reveals appalling gaps in the Dallas 911 system and the people who failed Deanna when she needed them most. If you or a loved one is experiencing domestic abuse of any kind, you are not alone. You can call the National Domestic Violence Hotline at 800-799-7233 or text START to 88788 for help.