I remember watching this at some point several years ago (the only one of these Case Files/Monster Files I've seen up until today). It's really good. Barrowman's measured narration, the amateur feel of the cinematography, the lack of major effect shots. It's really good. I could've done without the clips from interspersed among the narrative footage, but for a short 3-minute clip it's very well done and quite creppy.