Mother, teenage son and daughter move into house. House is haunted and son is possessed. Son does strange things including seducing sister.
Mother, teenage son and daughter move into house. House is haunted and son is possessed. Son does strange things including seducing sister.
Amityville II: The Possession?
or Amityville: It’s About Time (1992)
Here is the IMDb page, I hope.
Amityville II: The Possession
http://imdb.com/rg/an_share/title/title/tt0083550/
Possibly The Haunting In Connecticut