Other mistake: Jim Beavers, who plays Drew Thompson/Sheriff Shelby as a character, does not wear glasses in the show. The actor, however, does wear them off camera, and just above his ear, you can plainly see an indent of where his glasses sit in multiple different scenes.
Boyd Crowder: I've learned to think without arguing with myself.
Whistle Past the Graveyard - S5-E8
Question: Boyd and crew nearly ruin their relationship with Yoon by killing the Memphis crew in Mexico, as they were warned not to kill anyone south of the border. They redeem themselves by saying they'll take care of the bodies themselves and get them into the US. All well and good until the Mexico police stop them, and the crew let them take the truck with the bodies, congratulating themselves on the deception...but how does that solve anything? Corrupt or not, the cops now have the bodies, in Mexico.