Continuity mistake: Longmire is taping prisoner photos to the wall. When looking at the last photo, the tape is in the middle of the paper. When he puts it on the wall, the tape is on the right side of the paper. When the photo is in the background, the tape is on the left side. (00:59:55)
Continuity mistake: Walt is with Cassie Linder in her family's barn while she tries to get a tractor running. It is dark outside, and before dawn. They talk for a little over a minute of screen time. When Cassie finally gets the tractor up and running and rides out of the barn, it is a bright sunrise.
Continuity mistake: When Mathias is dumping out the ashes, he is holding it with just his right hand and then grabs it with with his left hand (so both hands are on the bag). In the next shot, he's back to holding it with just the right hand and then grabs the bag with his left hand again.