The Haunted House Of Horror (1969)

Starring Frankie Avalon, Jill Haworth, Dennis Price, Mark Wynter, George Sewell
Directed by Michael Armstrong
(actor & director credits courtesy IMDB.com)

A group of partying teenagers decide to visit a haunted house for some fun, but one of them ends up murdered, and the rest suspect the killer could be one of them.

Despite the title, this is more of a murder mystery than a supernatural thriller, and there's few attempts by the filmmakers to make the haunted house spooky or terrifying, although they should be given credit for sustaining suspense as to the murderer's identity until the film's climax.  Once we reach it, there's an effective confrontation shot between the two final suspects in which the murder weapon appears between the two, but it's not clear who's holding it, before the big reveal.  The young British cast is good, although Avalon seems an odd fit with the rest of them, but is likely in the movie with an eye towards making a profit at the U.S. box office.

It! (1967)

Starring Roddy McDowall, Jill Haworth, Paul Maxwell, Aubrey Richards, Ernest Clark
Directed by Herbert J. Leder
(actor & director credits courtesy IMDB.com)

A mentally unbalanced museum employee discovers that one of the museum's statues may be the legendary Golem, and seeks a way to bring it back to life.

I'm very fond of this movie, an exciting mixture of sci-fi and horror with Roddy McDowall excellent in the leading role.  It had to have been a difficult part to play, as in some scenes he's perfectly rational, and in others completely whacko, but still manages to evoke audience sympathy at times.  The staging of the statue's rebirth scenes is very well-done, and the lighting, photography, and editing cleverly enhance its presence as a foreboding figure.  Where the film's a bit weaker is in its screenplay, which borrows a bit too much from Alfred Hitchcock's Psycho to explain McDowall's strange unbalanced behavior.