An excellent little known horror movie from the 1960's is available on blu-ray today, and I urge everyone to pick this one up if you haven't seen it. Deborah Kerr stars as an English governess hired to look after two little kids on a mysterious estate where something tragic happened years ago, and the souls of the dead are now haunting the children. She thinks it's up to her to save them, but she's not immune to the terror herself. This is a genuinely scary, disturbing movie, especially for the time in which it was made, and the amazing thing is that it still has the power to unsettle you, even today. It's one of the best and most effective ghost stories ever told on film.
Original 1961 Trailer: