i know the title of the film has the word "grave" on it
and the movie is about a young girl who lives on her own in a country area, lives in a cottage. a man with glasses comes into her home and they talk. the girl said she writes novels. :S
then one day shes reading a book and lying on a hammock next to a lake. these guys come past in a speed boat and she gets soaked by the water.
another time is wen she's on the hammock again. then the guys come back only in a canoe this time. they grab her and pull her into the canoe. then they take her to these fields. thats all i remember.
oh wait! - the cover of the video was of a naked woman in the dark with a knife. :S thanks!