First, the very premise leaves a lot to scratch your head over ... the "curse" is passed along via sex, but if the demon/ghost/whatever gets you, then it simply moves on to the next person down the chain. Oh, and it ALWAYS just walks straight towards you - a fact conveniently thrown right out the window in the final stages of the film. So, that said , why not just jump a flight to another country - BOOM! problem solved - as how the hell is it going to walk right across an ocean.

Second, the director and cinematographer seem to be far too interested in being flashy in style. Hey look - she's placing blades of grass in a line on her leg. Hey look - here is (yet another) spinning camera shot. If that effort had been put into some of the actual script (and the absolutely inane dialogue) this might have been a better film. Can you see that girl? Yes? Oh, ok. - or - point at the ghost. what does it look like? I can't tell you. WHY? If I told you it looked like a Starbucks barista would that make you not want to protect me?

During one attack - one in which a friend is actually hurt - no one really seems to even raise an eye. Again - why not just drive and keep on driving till you run out of road.

Early in the movie it is stated that the ghost/demon/whatever can take the form of someone you know, so you really are never sure who is who - that is, unless that someone is walking slowly right toward you. But when the thing changes forms (even in the middle of an attack) to someone just because they are hulking, evil looking, or pissing themselves - it just makes no sense.