not that great - I'll explain
It's a bit too slow for my taste.
Still - it was OK up to a point where he confesses to the police - and it turns out there's a greater mystery at hand.
It's that mystery which pretty much ruined the film. I guess I'll get into spoilers - so read at your peril.
Spoilers:
Basically, we still don't know why his father killed a girl, was he a serial killer or what? I don't get it - and it never was explained.
Furthermore, Him then trying to kill the police woman - and then his son - it just didn't fit in with the way the father figure was played (he was acted as being a fairly charming and timid person - and someone who cares about his son - and he was certainly of age, which means that even a serial killer (we still don't know why he killed the girl - wtf??) of that age is unlikely to kill his son rather than going to prison). So it's either a case of bad acting or bad writing - I'm going to blame writing on this one.
So, yeah, up until the confession, I wasn't bothered as much - there was a mystery and a potential for a good mystery at that. But the reveal and especially what happened after the reveal, that was the biggest disappointment.
Otherwise, you do have some good actors there - the shooting angles, soundtrack - these are all good. All ruined by bad writing.