he twist — more an explanation really — reveals itself early here, doing so discreetly enough that only a fraction of the audience will pick up on it, promising wildly different viewing experiences for all. Still, best to let you discover the perversities for yourself. Suffice it to say, the pic’s reality is not our own — more akin to fellow Austrian Michael Haneke’s “Funny Games,” where psychology offers limited insights into human behavior and the body-horror moments feel nerve-twistingly raw.