So Why Didn't Alec Just Go To The Police?
He knows who the kid killer is. So, you know, just go to the fucking police.
Job done. The end.
But instead, he hatches an elaborate plot to go phrogging with a girl in his tormentors house so that he can fuck with the whole family (rather than the actual cop) putting Mindy's life in danger and terrorising the family (who had done nothing).
Yes, the film tried to insinuate that Alec was a little fucked-up therefore blinded by his desire for revenge but that was just dumb.