Possession
A young woman left her family for an unspecified reason. The husband determines to find out the truth and starts following his wife. At first, he suspects that a man is involved. But gradually, he finds out more and more strange behaviors and bizarre incidents that indicate something more than a possessed love affair.
Starring Isabelle Adjani, Sam Neill, Margit Carstensen, Heinz Bennent, Johanna Hofer, Carl Duering, Shaun Lawton, Michael Hogben, Maximilian Rüthlein, Leslie Malton
Watch "Possession" on shudder-shudder-subscription released in 1981. It's a drama and horror movie, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of movie.