London, 1853: Young Charles Lenox is called upon by the duke of Dorset, one of England’s most revered noblemen, for help. A painting of the duke’s great-grandfather has been stolen from his private study. But the duke’s concern is not for his ancestor’s portrait; hiding in plain sight nearby is another painting of infinitely greater value, one that holds the key to one of the country’s most famous and best-kept secrets. Dorset believes the thieves took the wrong painting and may return when they realize their error.

In what promises to be a breakout in Charles Finch's best-selling series, Charles Lenox travels to the New York and Newport of the dawning Gilded Age to investigate the death of a beautiful socialite.

London, 1850: A young Charles Lenox struggles to make a name for himself as a detective...without a single case. Scotland Yard refuses to take him seriously and his friends deride him for attempting a profession at all. But when an anonymous writer sends a letter to the paper claiming to have committed the perfect crime - and promising to kill again - Lenox is convinced that this is his chance to prove himself. The writer's first victim is a young woman whose body is found in a naval trunk, caught up in the rushes of a small islets in the middle of the Thames.

In the small hours of the morning one fall day in 1866, a frantic widow visits detective Charles Lenox. Lady Annabelle's problem is simple: her beloved son, George, has vanished from his room at Oxford. When Lenox visits his alma mater to investigate he discovers a series of bizarre clues, including a murdered cat and a card cryptically referring to "The September Society". Then, just as Lenox realizes that the case may be deeper than it appears, a student dies, the victim of foul play.

Charles Lenox has received a cryptic plea for help from an old Harrow schoolmate, Gerald Leigh, but when he looks into the matter he finds that his friend has suddenly disappeared. As boys they had shared a secret: a bequest from a mysterious benefactor had smoothed Leigh's way into the world after the death of his father. Lenox, already with a passionate interest in detective work, made discovering the benefactor's identity his first case - but was never able to solve it.

It's London in 1876, and the whole city is abuzz with the enigmatic disappearance of a famous foreign pianist. Lenox has an eye on the matter - as a partner in a now-thriving detective agency, he's a natural choice to investigate. Just when he's tempted to turn his focus to it entirely, however, his grieving brother asks him to come down to Sussex, and Lenox leaves the metropolis behind for the quieter country life of his boyhood. Or so he thinks. In fact, something strange is afoot in Markethouse.

It’s 1876, and Charles Lenox has just given up his seat in Parliament after six years, primed to return to his first love, detection. With high hopes he and three colleagues start a new detective agency, the first of its kind. But as the months pass, and he is the only detective who cannot find work, Lenox begins to question whether he can still play the game as he once did.Then comes a chance to redeem himself, though at a terrible price: a friend, a member of Scotland Yard, is shot near Regent’s Park.

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.

It's Christmas, 1866, and amateur sleuth Charles Lenox, recently engaged to his best friend, Lady Jane Grey, is happily celebrating the holiday in his Mayfair townhouse. Across London, however, two journalists have just met with violent deaths - one shot, one throttled. Lenox soon involves himself in the strange case but must leave it behind to go north to Stirrington, where he is running for Parliament. Once there, he gets a further shock when Lady Jane sends him a letter whose contents may threaten their nuptials. In London, the police apprehend two unlikely and unrelated murder suspects.

On a spring morning in London, 1875, Charles Lenox agrees to take time away from his busy schedule as a Member of Parliament to meet an old protege's client at Charing Cross. But when their cryptic encounter seems to lead, days later, to the murder of an innocuous country squire, this fast favor draws Lenox inexorably back into his old profession. Soon he realizes that, far from concluding the murderer's business, this body is only the first step in a cruel plan, many years in the plotting. Where will he strike next?