I have studied all manner of ghost and demon in my quest to better understand this realm betwixt Heaven and Hell but there is little in this study that has proved more intriguing — and downright flesh-creeping — than that of the Croglin vampire. On a dark autumnal day such as this, having struggled against sheets of rain and the swirl of stray leaves in the lonely path across the cemetery, my mind creeps towards that of a real churchyard horror, set upon the Lancashire moorlands.

It happened in the last century. Croglin Low Hall was a low, one-storeyed house on a slope looking down its gardens and cross a small park to the churchyard two hundred yards away. Along the front of the house ran a wooden verandah, like an African stoep. Two brothers and a sister took the house for the summer. I will not give their names…