Lots of horror movies are told from a killer’s point of view, from “Peeping Tom” to “Henry: Portrait of a Serial Killer.” But none of them ever made me wonder: What would a maniac do on his way to a slaughter? Now I know, thanks to Chris Nash’s glorious and genre-crushing take on the slasher film.

What if you couldn’t distance yourself from something horrific, because it’s impossible to escape your own flesh and blood.