josh mankiewicz: april holton's twin brothers chris and mike were keeping vigil in the icu. >>> apriln brothers, chris and mike, were keeping vigil in the icu. their sister had been shot in the head and there was little doctors could do. >> you see in the movies with the machine breathing for the person. this is far more surreal than what it seems like in the movies. this is good-bye. there is no more hugs. there are no more phone calls. there are no more birthday videos, this is it. >> it was 11:00 on september the 12th when they pronounced april dead. >> worst day of your life? >> to date. >> one person who did not get to say good-bye was april's oldest son, madison. was now a murder suspect. he had been questioned that morning at the sheriff's office. after one round of interrogation, the sheriff asked madison's uncle chris to join them. >> there's a reason he's in here. he has a disinterested heart. >> i didn't know what to think. i didn't know if madison did it. i didn't know if he didn't do it. i did not see any evidence. >> here's what madison says happened after the first depu