Charles Lenox, Member of Parliament, sets sail on a clandestine mission for the government. When an officer is savagely murdered, however, Lenox is drawn toward his old profession, determined to capture another killer.

1873 is a perilous time in the relationship between France and England. When a string of English spies is found dead on French soil, the threat of all-out war prompts government officials to ask Charles Lenox to visit the newly-dug Suez Canal on a secret mission.

Once he is on board the Lucy, however, Lenox finds...