When a body is found beneath Michelangelo's dome, Gabriel Allon is summoned to secretly investigate the death that has been ruled a suicide--a case that brings about an unthinkable act of sabotage.

A serial novel featuring contributions by twenty-five masters of suspense follows detective Jon Nunn as he re-opens a ten-year-old case to discover if the wrong person was convicted and put to death for the murder of art curator Christopher Thomas.