Weird / bad ending

Rating: 7/10 (20 June 2015)

The movies goes for about 20min to long. Scrap everything about Kevin Bcons wife calling him and scrap the last everything after Bacon tells Penn that they got the killers.
Penn response "I just wish you could have been quicker" Black screen, end movie.
THEN this movie would be a solid 8/9 out of 10.
It doesn't receive full marks because it doesn't really make sense. I get that the kids accidentally shot the girl, I'm OK with that. Why then would they follow or drag her from the car then beat her with a hockey stick. Strange
The last 20min really wrecked the previous 2 hours that were fantastic.