It was in Llangwynedd, a remote Welsh mining village, that the strange, the odd and curious things, began to happen. The electricity consumption, in a community of 810 people, suddenly leaped to enormous proportions... and no one could discover who - or what - was using it.There were rumors of ghosts and monsters wandering at night on the mountain... and then events changed... instead of just strange, they became horrific.David Vincent, always watchful and alert, recognized that the macabre incidents around the old mining shaft were signs of the Invaders. And once again he had to fight the powerful aliens who were planning to subdue the earth...