Ugh, such a frustrating and ridiculous mess.
I am usually very "forgiving" when it comes to horror movies, to the point where I can acknowledge and value the general idea and overlook the narrative flaws. If the film as a whole is fun to watch, it has a well developed atmosphere and it features a decent amount of horror elements, I'm pretty much okay with it ... but the story has to make SOME sense, at least. Well, "The Black Cat" (or any of the...