On the Salisbury Plain in Wiltshire, England is a mysterious ruin, a stupendous collection of upright stone slabs and lintels laid out in a ceremonial pattern. It is called Stonehenge, and archaeologists date the earliest remains as far back as 2000 BC. There is evidence that the largest, or hailstone came from Marlborough Downs some twenty miles to the North, where natural outcroppings rise from the ground, and as though it were a pattern for Stonehenge, you'll find here a trilithon, three oblong stones in the form of a doorway, a ruin known as the devil's door. There are tales of strange happenings and apparitions hovering over this eerie place...