Due South

In its third season, when the show moved from CBS to first-run syndication, the new production company wanted the premise inserted into the opening titles, so first-time viewers wouldn't wonder what a Canadian Mountie was doing in Chicago. Paul Gross opted to include the premise in each episode, with "I first came to Chicago on the trail of the killers of my father, and for reasons that don't need exploring at this juncture, I've remained, attached as liaison with the Canadian Consulate." It became a running gag throughout the third season, as the writers found different ways to insert the line into almost each script, whether it was spoken by Fraser or other characters.

Most of the city scenes are set in Chicago, IL, USA. However, if you watch the street signs you will see 'One Way' and 'Do Not Enter' signs without words on them, which are typical for Canadian cities. Also, speed limit signs can be seen posted in kilometers/hour instead of miles.

Featured in WatchMojo: Top 10 Fictional Canadians (2015)