The Stone Tape DVD

Atmospheric seventies ghost story from the BBC. When scientists working for Ryan Electrics move into their new headquarters, a gothic mansion, they find one room unfinished.
Strange noises are heard, and the builders are too frightened to complete their work.
When the other scientists dismiss such fears as irrational whimsy, only psychically-minded Jill (Jane Asher) senses the dark secret that lurks beneath the building.