In 1921 a woman, Florence Cathcart, who has made a career at debunking supernatural hoaxes, is approached by a teacher who claims that his private boarding school is haunted by the ghost of a child. At first she doesn't want to take the job but he convinces her to investigate. As the movie progresses she becomes more and more convinced that the spirit is real--and trying desperately to tell her something. Is her life in danger? And why does the school seem so familiar. This is a well-constructed movie that keeps you guessing what's going on until the very end, with good special effects and a great payoff. Recommended.