An NYPD detective is forced into an early retirement after a case gone awry. He moves into a small idyllic town in Canada. But the town holds a dark secret.
Except the secret in all his head. The town is actually as wholesome and idyllic as it seems to be.
The townsfolk are all just playing along with his investigation to make him feel better about losing his job.
"I don't get this whole cult thing. What am I supposed to be worshipping?"
"I dunno, Greg. Something with blood?"
"Can it be the Goddess of high blood pressure?"
"That sounds dangerous!"
"Sure, fine. As long as you got your robes hidden in a secret compartment in your closet."
"I like this. This is fun."
This is like a twisted combination of Hot Fuzz and Shutter Island
Silent Hill
I like the implications of this comment, that Silent Hill isn't a haunted town full of supernatural manifestations of your psyche, and it's actually just cheeky locals dressed up as monstrosities.