(It also occurred to me that if a trio of townies can drive a tanker full of red paint onto the grounds and hook it up to the fire suppression system, our big bad could have skipped the tedious harvesting of 'ingredients' and occult ritual and just cooked up some toxic goo and fed it into the sprinklers. (Would have been a short season, though...))

I agree that the plot ultimately disappointed. I felt they could have thrown out at least one layer of red herrings and had one less episode.