Mathu Timeline and Summary

We see him hanging out in front of his house with a shotgun as Beau's body lies there in the weeds. He tells Snookum to mind his own business and get out of there.
Mapes interrogates Mathu, and tries to get him to get his friends to admit that none of them did it.
Mathu refuses.
When Mapes finds out that Fix isn't coming down to raise hell, Mathu prepares to turn himself in.
Candy tries to get him to stay, but he refuses.
He goes into his home to have a conversation with the other men.
When all of the men are talking inside of Mathu's place, Mathu tells them that they don't need to do anything more, and that he's impressed with all of them for what they did.
We don't hear from Mathu anymore after that, and the last time we see him he's hopping onto Clatoo's truck to catch a ride home.