You know what, for an Argento movie, this just might be his most logical
...work. I know people hate various aspects of this film, but I believe that even they must agree that for an Argento movie, logic of this film was the closest to a "real world" logic. That's why it's more of a mystery film than an Argento extravaganza and that's exactly what some fans didn't want.
Can you think of a movie of his that's more realistic than this one?