Continuity mistake: The front view of Sheriff Garrett [Ethan Hawke] while he is talking to Billy shows a stone-walled well between him and the cabin door, but there's no well visible in the rear view. When Billy walks out with his hands up, there appears to be a well to his right (where the horse rail should be visible), but there is no well when Sara and Rio exit the cabin. (00:14:04 - 00:15:10)