this is a dark movie involving four or five characters one of which is a total wack job. they're hired to throw a scare into another bad guy's son. they dress as cops and make a stop on a back road. this does not go well as the "kid" wouldn't cooperate. the 'wack job' loses it and kills the "kid". now they're being hunted (to death). the story evolves from there. more details but no names available.