Lighthouse Keeping Loonies AKA The Lighthouse Men - S5-E8
Factual error: The "oil" that spurts up from underground is far too thin to be oil.
Factual error: In this episode, when the show opens, it shows the outside of a restaurant where the news team meets for lunch. If you look closely, there are palm trees on the left side of the screen next to the restaurant, almost hard to see because the tops blend into the roof of the restaurant. Everyone knows that because of its climate, Minneapolis does not have palm trees. Perhaps even more noticeable is the huge hotel looming above the restaurant that says "Sheraton Universal", a well known hotel attached to Universal Studios in Los Angeles.