In 1873, a string of English spies is found dead on French soil, and the threat of war prompts government officials to ask temporarily retired detective Charles Lenox to visit the Suez Canal on a secret mission, in this fifth book in the series by the author of The Fleet Street Murders and A Beautiful Blue Death. Once he is on board the Lucy, however, Lenox finds himself called upon to go back into the sleuthing business, when the ship’s second lieutenant is found murdered on the voyage's first night. Lenox finds the trail, but on a ship where nobody can come or go and everyone is a suspect, he has to race against the next crime—and also hope he won't be the victim.
"Agatha Christie meets Patrick O'Brian in Finch's accomplished fifth whodunit set in Victorian England … the best in the series to date."—Publishers Weekly (starred review)