John the Eunuch, Lord Chamberlain to the Emperor Justinian, is skilled at keeping his footing on the treacherous slopes of court intrigue, but even he may slip when presented with a new and byzantine problem: why would a holy man high atop his pillar spontaneously combust during a thunder storm? Soon, other stylites burn to their deaths. John, still fresh from working a tricky murder case two years earlier in One for Sorrow, finds that his investigations are hampered by a pagan philosophy tutor from his youth and a heretical Christian prophet whose ultimatums threaten to topple the Empire.