I don't get the cops at the end. ***SPOILERS**
Maybe I am stupid not to get the ending but why didn't the cops do anything?
Is it because Leigh's character didn't actually see any of the people commit the murders?
Is it because the cops didn't believe him and they know the family and like them?
Shouldn't the whole area have been taped off and investigated no matter what?
Or did the cops know about everything and were in on it and traded not telling anyone for human pies?
Even if the old man called the cops pretending to be nice, a massive federal investigation should have happened immediately whether it be dark or not...