Coincidentally, I watched Hammer's 'Countess Dracula' on the weekend (I tend to stay up late watching horror movies when Elaine's not home). It's based very loosely on the story of Elizabeth Bathory, misses a lot of opportunities to be really scary (particularly at the end, if you know the true story), and the violence is mostly pretty unconvincing by modern movie-making standards. Disappointing, but still quite watchable.