Abi Logan and her partner, Grant MacEwan, are looking forward to a romantic weekend on a remote island off the coast of Scotland until the ghost of a 15th Century monk appears on the scene, leaving a trail of victims in his wake. The Scottish call this kind of apparition eldritch –– weird, ghostly, and sinister. Abi couldn't agree more, though, unlike the locals, she's sure this is no spirit of the dead, but a real live person who seems to have a very earthly grudge against Abi, Grant, and their whisky-making host, Neil. Abi and Grant are faced with finding the murderous monk amidst their fellow tourists, and the crew of colorful locals armed to the hilt for their Viking war games, before the spirited specter kills again.