Jimmy listen to me too this instead.

1) get him super drunk and tell you where all the copies are
2) gain his trust then overdose him with sleeping pills
3) find the copies and destroy them
4) record him when he abuses you
5) carry all recordings to your mother's house
6) call the police and tell them that he is the murderer and give them the tapes
7) when he accuses you of covering up for the real killer and police call Austin
8) have the girl acting scared when she's around Noel saying that he was the one who tried to kill her when she found out who he was and that Austin saved you
9) carry them to the place where the bodies are and make sure you have bits of his hair in the hands of one of the body make sure the police doesn't see you
10) Austin kill both polices and Noel in the abandoned building
11) tell the detective that while you guys were there some unknown persons came and shot Noel saying revenge for killing my cousins and the police tried to tackle him but he shot them instead and left and that you didn't see the person's face
12) get marry, adopt kids live happily ever after