A very good film, I can't say that it has the level of suspense of other Argento films, however it does have a supernatural/sci fi element to it which is not as common in some of this other more well known films.
This one is maybe worth a watch if you are a hardcore b&z grade horror fan, however dont do what I did and buy it !!!!
The cover art by the guy who drew the fathers day cover looked so good, if only the film lived up to its cover