“Maniac” is a different kind of slasher film, one so incredibly vile and utterly wretched that you’ll be forced to decide if you enjoyed this or not. I experienced the same conflict of decision. Did I enjoy this or not? I’m not entirely sure, but a good part of me says “yes.” At a time when the Son of Sam was still fresh on everyone’s minds, “Maniac” is the closest depiction of a madman on the streets that we’ll ever get again. We don’t just watch this madman destroy folks, we learn about him, and we get into his mind.