A few months ago, Boston expat Maura Donovan was reunited with her mother after more than 20 years of absence. Since then, Maura has been getting accustomed to Irish living, complete with an inherited house and a pub named Sullivan's. But now, her mother has returned, and she's brought Maura's half-sister in tow. Worse, a handful of university students are knocking on Maura's door, asking about a mystical fairy fort that happens to be located on Maura's land. Then one of the students disappears after a day of scoping out the fort, and Maura's 8th outing (following The Lost Traveller) becomes even more troubling when she uncovers a decades-old corpse buried in the center of the fort.