100℅. Some straight laced, gullible "undercover" cop rolls into a goth bar and starts asking about a "vampire murder" to a bartender, someone who knows the people, maybe is the people?

Tunnels are the only way to travel safely at night in Dayton due to all the vampires.

Do people in Dayton spend a lot of time in tunnels or something?

My understanding, after doing no research, is that Dayton is like an iceberg - the city is only the fraction that pokes through at the surface, everything else is underground from vampires in storm drains, to zombie-infested catacombs and below that great caverns full of goblins and morlocks. Probably.

I've been up to Wright State in the middle of winter, armed with hat, gloves and a heavy coat, once you go into the tunnels though, you will see people walking around in shorts and t-shirts. It's actaully pretty cool (no pun intended), the students pretty much commute via the tunnels and rarely ever need to go to the surface. https://webapp2.wright.edu/web1/newsroom/2013/02/13/digging-into-the-history-of-wright-states-tunnels/

Obviously these tunnels don't connect to anything off campus, so vampires would need to travel above ground in order to access them. This is probably why I've never seen any while visiting

Yes

I suspect Big Vampire is going to try and ensure this never sees the light of day (ah the irony)

Ultimately, it depends on who bought and paid for it - if it's a Netflix original there might be nothing that can be done, if they just had the rights then someone else may. Of course, it might not be Netflix's call - the legal department may have decided that it couldn't be screened or it'd leave the broadcaster open to being sued. It would be a brave company who decided to roll dice on that. However, given the publicity, that's got to make it more likely someone would take a chance on it.