Harbor of Spies is an historical novel set in Havana in 1863 during the American Civil War, when the Spanish colonial city was alive with intrigue and war related espionage.
The protagonist - a young American ship captain named Everett Townsend - is pulled into the war, not as a Naval officer, as he had once hoped, but as the captain of a blockade-running schooner.
The rescue of a man outside Havana harbor sets in motion a plot where Townsend finds himself trapped by circumstances beyond his con.