When farmers cutting turf in an Irish peat bog make a grisly discovery, the perfectly intact body of a young woman with long red hair, archaeologist Cormac O'Callaghan and pathologist Nora Gavin are thrown together by their shared scientific interest in human remains. Because of the preservative effect of the bog, it is difficult to tell whether the body has lain there for two decades, two centuries, or two millennia.
"Archeology, Folklore and Mystery in Ireland"
At a meeting of the British Intelligence Joint Counter-Terrorist Group an announcement is made that "the opposition may be about to deploy an invisible". An "invisible" is the ultimate intelligence nightmare: a terrorist who, because he or she is an ethnic native of the target country, can cross its borders unchecked, move around that country unquestioned, and infiltrate its institutions with ease.
"Gripping - Excellent Narration"
American forensic pathologist Nora Gavin has been called to an archaeological site in the bleak midlands west of Dublin to assist at an excavation where a well-preserved Iron Age body has been found buried in a peat bog. How many hundreds or thousands of years ago was the man killed? Was his a ritual death, some kind of human sacrifice? These academic questions are intriguing, but of much more urgent interest is the second body found nearby, of a man wearing a wristwatch, hardly an Iron Age accessory.