Every cop except Esteridge had forgotten the case?

15 years earlier, some ultimate psychomaniac omnipotent serial killer hitchhiker wiped out almost an entire police department and killed countless civilians in a rural otherwise peaceful area, while framing some random kid for his crimes.

Now, in that same area, the exact same thing is happening again...and they act exactly the same way as the last time while seeming to be completely unaware of the John Ryder case.