Scary Movies Never Scare Me (10 Points)?

Hatchet. It is a movie alike Friday the 13th, a deformed boy is with his father, and his father leaves their house one night, and the boy is attacked by rebel teenagers. The father comes home to his son's rescue (the house catches fire), and accidentally kills the son with hatchet, while knocking down the door, not knowing he was on the other side. The son comes back to revenge for his father's death (years after his death -- of a broken heart), and it is very, very, very gruesome.