Dr. Rowan DuPont and the Metropolitan Nashville Police Department are hunting a serial killer. All the victims have one thing in common—they could be Rowan's twin, except her twin sister is dead.

Rowan grew up in a funeral home, surrounded by death, so her keen insights into homicide cases seldom fall short of the mark. Though growing up as the undertaker's daughter made her acutely aware of life and all its frailties, she is only human. Will her one mistake in this shocking case be her last one?