Ethan Gage is back in The Trojan Icon, the richest novel yet in the New York Times bestselling series of historical thrillers. Hurtling from the snowy palaces of Russia's St. Petersburg to the shadowy harem of Constantinople in 1806, the novel's characters conspire and compete for a Trojan relic that can give invincibility to empires.

The action begins when the American adventurer and his wife, Astiza, are recruited to steal two Polish swords from the world's most formidable treasury. Gage must break into a vault in the Peter and Paul fortress before Prussia ends Polish...