I'm trying to identify the following film if possible (I watched this ghost story a couple of years ago on TV).
All I remember is:
It started with a guy getting into a new apartment, the previous owner having met an untimely end about which no one wants to talk about.
As the story progresses he meets first the child of a neighbour's family who continuously plays with a ball on the floor, then the mother of said child and the brutal father who turns out to be a cop.
He gets wind of brutal beatings the woman receives from her jealous man. Once he even called the police... but the apartment turned out to be empty!
What followed were a number of situations where the guy thought he is going insane, at least until he understood that the whole family were ghosts. The father murdered the two and then killed himself.
What is more is that nobody interfered or helped... which he in the end does (which the previous owner of his own apartment didn't, which caused his death). He loses out but survives. The father gets dispersed and the mother and child manage to move on.