madison. >> on the phone with 911, the neighbors said it was an attempted murder suicide. michael holtond by the time deputies arrived. madison's mom was unconscious but breathing. >> so investigators first thought was mr. holton shot his wife and then himself. >> from what we had been told, you would think that he actually shot her, mr. holton, and then would have turned the gun and shot himself. that's what one would tend to believe. >> april's injuries suggested she'd been shot through her hand first as if she'd put it up to protect herself, and then as she turned her face away from the gun, she was shot in the head. michael's injuries appeared self-inflicted. >> and we noticed trauma, what appeared to be blood trauma in his mouth. the first formulated thought is he probably shot himself in the mouth. >> earlier they'd seemed like two parents on the same page about their teenage son. what had happened to this couple in only 11 minutes? april and michael got together in high school. they married after graduation and pretty quickly became the parents of three kids. >> she was all about

natalie morales: madison holton, high school senior, accused killer. is a huge deal. chris ogden: the father had come home and found a lot of drug paraphernalia. tanya: they were having issues with him. it was hurting her heart to have this happen. natalie morales: distraught parents, a rebellious teen. a family meeting explodes into violence. josh mankiewicz: that situation goes from calm to murder in eleven minutes? bill franklin: yeah. i mean, it's a homicide.