This has been driving me crazy for 10 years, maybe more. I saw it on TV and only watched the intro and got kinda scared (yeah I was very young) so I didn't watch past the intro, thus I can't describe more than this. But I'd like to watch it again.
What I remember: English-spoken American movie from the 90s or early 00's (I think). The intro starts with this scene where a man kills two girls who were playing in the field. The filter on this scene was kinda yellowtoned. The man was big/broad, I think dark and they didn't show his face. He assaulted one girl and the other girl ran off but he caught up and hit her with a bat or a branch. The girls might have been twins. Before or after this scene you see a (another) man sitting on the bus. I think this part of the movie takes part in modern time (so I guess that would be the 90's). The previous part looked a bit older cause of the yellowish filter and it took place in the countryside, though I'm not sure.
That's all I recall. Thanks in advance!