At a peace treaty signing between Egypt and Libya in Thebes, three of Egypt's leading scribes die violently on the Temple forecourt, the victims of a vile poisoning. To add to the mounting unease, a prosperous merchant and his young wife are found drowned. Rumours soon sweep the imperial city. The Poisoner of Ptah has returned. It falls to Amerotke, Chief Judge of the Halls of Two Truths, to investigate these hideous crimes.