The Appointment (1982)

The Appointment is a 1981 British supernatural horror drama film. It features Edward Woodward, Jane Merrow, Samantha Weysom, and John Judd. Walking through some woods a girl is seized by an unseen malevolent force. The authorities erect an iron fence around the woods. Later, another girl and her family are affected by the same force. First in dreams and then in more real ways.