WHAT was it called?

The movie I rented at RedBox is called The Horror at Preston Castle. I had to fumble around to find this site. There was no Horror, and what, or who, was supposed to be Haunting this "castle" that was actually an abandoned "youth prison" of some sort was anyone's guess (as was how they got in so easily!) The preface tells us of the spirit of a murdered inmate who comes back annually for "revenge" - on total strangers? - but that idea is dropped like a hot potato as the guy in the movie who takes two girls there to scare them, knowing "all sorts of stories" about the place but not telling them, starts in about a murdered female employee - but oh yeah, all the kids there liked her, so they killed the guy who didn't, her murderer? What a mess. Even replaying parts, I couldn't make out a single frightening image. I should have looked in a mirror at my own look of disgust and utter boredom! Just three kids running around screaming at vague noises and busy signals on cell phones. Ugh!