To his credit, Ken Russel took a weak horror novella, took out the confusing, tedious and frankly racist aspects, and turned it into a genuinely fun if bizarre piece of horror cinema. With such a flimsy inspiration and a low budget, it’s impressive actually how fun and thrilling this British horror is. While removing the negatives, Russel amped up and added the sexual and monstrous aspects. There are fantastic (if hilarious) serpentine prosthetics and make-up. There are thrilling action scenes and sets as we watch the young British cast run around, chasing and being chased by serpentine monsters and vampires (even if their acting and delivery feels a bit forced). Amanda Donahue gives the best performance by throwing herself into the role of the sinister but sexy Lady Sylvia. The erotic scenes are bold and shocking. Overall this feels like a tounge-in-cheek tribute to Hammer horrors, with a great folk-punk theme song!