Arthur Severn, a young Englishman on holiday in the west of Ireland, is forced by a storm to stop for the night in a mysterious village, where he hears the legend of "The Snake's Pass." Long ago, it is said, St. Patrick battled the King of the Snakes, who hid his crown of gold and jewels in the hills near the village. But it is not only legend that haunts the town. The figure of the demonic money-lender Black Murdock looms over the village, as he searches for the lost treasure while manipulating the townsfolk to his own evil ends. Even more threatening than Murdock is the shifting bog,...