Sweeney's chance encounter with a young boy sparks her interest in the boy's Revolutionary War-era ancestor, a stonecutter and gravestone maker. Coincidentally, Sweeney and the boy also stumble on the body of a murdered man in Revolutionary War clothing near the site of a recent historical reenactment. And, to make things more interesting, it turns out the dead man was writing a book on the boy's stonecutter ancestor. Sweeney and homicide detective Tim Quinn team up to solve the murder and, while they're at it, to close the books on a missing-person case involving a militiaman who vanished more than 200 years ago.