Acoyltes plays like an Aussie gloss on Stephen King. That’s not quite a compliment. Jon Hewitt’s thriller, about a trio of high school students imperiled by their discovery of a body in the woods shows admirable patience at the outset (after the requisite pre-credits shocker, of course) but fades after the introduction of an unforgivably tawdry backstory (child abuse as the impetus for vengeance). The last 20 minutes are flush with gore but bereft of any real visceral effect — if you’ve seen one basement dungeon standoff featuring various sharp implements, you’ve seen ’em all.