Placed outside farmhouses and churches are centuries-old human heads carved out of stone, once thought to ward off magical spirits. Todmorden, meanwhile, is a hotbed of alien conspiracies and purported UFO sightings, mainly fuelled by the 1980 death of coal worker James Turnbull, who was discovered 20 miles away from his home covered in a non-identifiable, slimy goo. His case remains unsolved.