The Oracle (1985)

Jennifer and her husband move into an apartment formerly oocupied by an old gypsy medium and discover her automatic writing device The Oracle which she used to speak with the spirit world. Jennifer holds a housewarming party and with friends present contacts a murdered man who demands justice. The spirts terrorizes her and manipulates her into investigating his death. This makes her murderers, the man's ex-wife and business partner suspicious of Jennifer's motive and they re-hire the killer they used before to murder her...