|Cristina Raines in The Sentinel|
The movie is based on a novel by Jeffrey Konvitz, who also co-wrote the screenplay. If you're a fan of these types of films, it's worth a look. The location filming in New York City also adds to the film's overall effectiveness. I remember seeing it on late night TV back in the early 80s, and it definitely creeped me out. It's sort of a combination of the haunted house and demonic sub-genres of horror. The Sentinel would make perfect October/Halloween themed viewing. It's just been released on Blu-ray by Scream Factory with some extras: three different commentary tracks, including one by author Konvitz as well as one by star Raines, and another by director Winner. There's also a video interview with the film's assistant director, and some trailers & ad art galleries. Here's a link to the original trailer: https://www.youtube.com/watch?v=YMIssiMkt04.