Corby, Gary. Athenian mystery

Would-be author Herodotus has hired Nico and his priestess wife, Diotima, to accompany him to Egypt to research that ancient country's history. Unfortunately, Egypt happens to be in the throes of a rebellion against its overlords, the Persian Empire. Pirates infest the sea route. Three different armies roam the Egyptian countryside. The river is full of crocodiles. Everywhere Nico turns, there's a secret agent ready to kill him, and possibly worse, he can't find a decent cup of wine anywhere

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