Ju-on: The Curse (2000)

Jealous of his wives love for another man, a teacher from her high school, a man brutally kills his wife and young son. Searching for the son who has missed a lot of school, the teacher enters their house, only to find the dead ghost of his mother, and consequently has a heart attack and becomes a ghost himself. The story goes on to tell of the new tenants of the house and what they experience, and an investigation by two police officers into why so many people are disappearing.