8x01 Lock, Stock, Some Smoking Barrels and Burton Guster's Goblet of Fire
First Aired: Jan. 08, 2014 on USA
Summary: Gus attends a Harry Potter convention in London in the Season 8 opener.
- Goof (factual errors): The Interpol agents are shown as being regular policemen capable of making arrests. However, Interpol acts as an information clearing house and liaison between different countries; they do not have authority to arrest anyone.
- At the end, Gus and Shawn bemoan the fact that they were so busy working on the case that they didn't get to see much of London and that they could have just of easily spent their time in British Columbia. This is an inside joke as that is where the show is filmed.