In May, 1899, a hundred and fifty unassuming envelopes are delivered to households across the city. Most of them will be picked up by butlers and carried on silver trays to their recipients. All of them contain invitations to the wedding of Lady Eleanor Serrs to Mr. Ryce Penn. When the newspapers hear about it, they start buzzing. Who can blame them? This would be the wedding of the century! She's the daughter of Duke Erravold Aubrey-Serrs, and the Marvelous Mr. Penn is one of the most famous men in the country.

But Penn is famous for being the city's most notorious thief. He's an unrepentant attention-seeker with a taste for gems and danger. And Eleanor swears that she's never met him.

Chief Inspector Lucas Haley, Penn's long-time nemesis, is called in to protect the Aubrey-Serrs family and try to figure out what the master thief is planning. He'll need all his experience and tenacity for this case, as it quickly becomes obvious more is at stake than the reputation of an innocent woman.