I saw an episode about Jack the Ripper a couple years ago
It was the first time I'd seen one since I was very little and they were on in reruns. I wasn't around for the original airings.
Anyways, I've lived in the Chicago area all my life, and this episode was set here. One thing struck me, they had a police broadcast about something happening at the intersection of Pulaski and Laramie which is funny since both roads run north-south and never intersect.
In the good old days before the internet made everything readily available, they could get away with that kind of thing and only a few people would notice. Now everyone knows everything because of social media, so mistakes like that don't fly.