I love biter bit tales, and this film has the perfect setup: A gang of psychopathic killers hijacks a couple who look like easy prey, but the guy is not at all what he seems. No, he’s not an ex-Navy SEAL, he’s a psycho too – in fact, he makes the gang look like Quakers. (I’m not giving anything away – it’s in the trailer.) It owes not a little to David J. Schow’s “Pick Me Up” and comes down to which psycho are you rooting for? There’s some inventive violence, but neither the story nor the characters have arcs. And so (to extend the image) it left me with a flat feeling.