Ancient Rome -- fiction

While keeping watch on a radical populist senator for his mentor, Cicero, Gordianus finds a headless corpse in his stables, in a story of conspiracy and murder set in ancient Rome.

"In 49 B.C., a bloody civil war between the forces loyal to Pompey and Julius Caesar has engulfed the Roman world and no one is allowed to be neutral.With Rome itself in turmoil, Gordianus the Finder receives an anonymous message informing him of the death of his son Meto, who lately has been acting as a double agent for Caesar.In search of the truth about Meto's fate, Gordianus journeys to the beseiged seaport of Massilia (modern-day Marseilles) which has sided with Pompey and is now stubbornly holding out against Caesar's troups camped just outside it's gates and harbor. Using his wits, Gordianus discovers a way past the seige troops and into Massilia. But once there he finds himself in a city where famine and slaughter threaten the populace, and intrigue and recriminations has taken over a city that cannot hope to stand out much longer against the troops outside its walls."