When Christopher Thomas, a ruthless curator at San Francisco's McFall Art Museum, is murdered and his decaying body is found in an iron maiden in a Berlin museum, his wife, Rosemary, is the primary suspect, and she is tried, convicted and executed. Ten years later, Jon Nunn, the detective who cracked the case, is convinced that the wrong person was put to death. In the years since the case was closed, he's discovered a web of deceit and betrayal that could implicate any number of people in the crime.