"What really makes this a good film, however, is the treatment of the supernatural presence. Whereas all of Hammer's previous vampire movies were about very physical creatures, the fresh type of vampire presented here has a far eerier ambience and gives the sense of a ghostly otherworldliness that helps the picture immensely. These are beings who command through their minds and their sexual charisma, and only rarely through physical strength. At times they vanish like specters, at times they – maybe – turn into cats. It's a wholly different take on the vampire, and one that achieves the combination of allurement and fearsomeness which most vampire tales strive for but fail to reach." - Anton Mistlake, Mistlake's Blog