Revealing mistake: Mason brings his unnamed son to the lake and acts like he is going to drown him. The baby is noticeably a doll in all but the scene where he kisses it. It is obvious from the way he is carrying it as well as the lack of movement.
Revealing mistake: A satellite photo is shown of Byran Mills' house in the first third or so of the episode. Later on in the episode, towards the end, a satellite photo of the cartel's secret landing strip is shown. They are the same photos, only one is zoomed in a little more than the other. (00:16:10 - 00:35:30)
Revealing mistake: June goes to an airstrip to fly to Canada, but all the abandoned aircraft on the field are ex Canadian Air Force, meaning it was probably filmed in Canada.