Poltergeist (1982)

A family's home is haunted by a host of demonic ghosts. Strange events begin when Carol Anne sleepwalks and communicates with a TV set. As the hauntings escalate, the family seeks help from parapsychologists who determine that it is a poltergeist. They discover that their house was built on a relocated cemetery. The spirits take Carol Anne and the family must find a way to rescue her from the other dimension. With the help of a spiritual medium, they successfully bring Carol Anne back but must confront the malevolent spirit known as the Beast. After a final battle, the family escapes as the house implodes into the other dimension.