Although it may be difficult to coordinate, utilize more public filming locations. Spooky house is just one example of a location somewhere in nature that isn't rented out for filming - I think it works really well. A place people could be walking around at, simply by chance, that could unknowingly be intertwined with the mysteries of Syntec... something like a forested area. A place you could just go out to on a whim (obviously preparation is needed, but the vibe of the location is hopefully understood).