I think the move starts at a very good pace. We understand the main character has a big issue with death because of his traumas and such. But nothing explains why his mother is negative about everything.

((SPOILER ALERT)) For me, the move becomes a nonsense when his mother for no real reason tries to kill the ghost ex-girlfriend in the cemetery, WHY!? She was not even treating anyone, yet, and then I think we ONLY have that scene with death spirits surrounding the car to make a poster... no explanations too...

After all, it is a movie pretty okay to watch... but could be way better...