It's no secret that Stephen King TV series "Mr. Mercedes" has been filming in Charleston, with a few different calls for extras reaching the internet during the past few months.

Now, the season finale episode is traveling an hour and a half outside of the Holy City to a town in Clarendon County with a population of 4,042. "Mr. Mercedes" is headed to Manning. 

The finale episode will be filmed on Tuesday and Wednesday in and on the grounds of the town's courthouse.

"We’re a small town, a small county, and having something like this is going to be very exciting for everyone involved," said county administrator David Epperson, who has been in contact with the film crew. "I feel like it will be a big boost to the area from an economic and visibility standpoint."

Epperson and the Chamber of Commerce were notified just last week and have been working to accommodate the crew. 

"It’s been kind of a whirlwind the last couple of days trying to get everything ready," said Epperson. "They’ve been very gracious to work with us."

To Epperson's knowledge, this is the first TV show ever filmed in Manning. 

"We hope this will be a good stepping stone and that the production company from 'Mr. Mercedes' will maybe come back and film other episodes here or spread the word to other production companies," he said.  

The casting and production agency for the show, Tona B. Dahlquist Casting, is calling for 350 to 400 extras each day.

Among the call for extras is a very specific search for a stenographer with an accompanying machine and a courtroom sketch artist. 

All extras are paid $64 total or $8 an hour for eight hours total, with time and a half compensated for any additional hours.

Instructions for how to turn in submissions are available via posts on the Tona B. Dahlquist Casting Facebook page at facebook.com/Tona-B-Dahlquist-Casting-354971765249.

Reach Kalyn Oyer at 843-371-4469. Follow her on Twitter @sound_wavves.