In his sixth adventure, something sinister is afoot in the house in the west of Ireland in which young Sherlock is staying.

A resident of St. Bartholomew's Abbey, a monastery in the Sierra Nevada mountains, Thomas has the ability to see the spirits of the dead, a gift he has used to resolve mysteries and prevent future tragedies. As the story opens, the seer is unsettled by visions of bodachs, sinister ghostlike entities whose appearance precedes some dire tragedy. Thomas frantically searches for some sign that will help him head off disaster, even as St. Bart's is thrown...