The Dead Betray None — J.L. Buck

An aristocratic spy and a highborn lady cross paths over a dead body.

1811 England seethes with discontent. A self-indulgent prince regent sits on the throne of a country at war with France, on the brink of war with America, and facing growing rebellion at home.

Lucien, Viscount Ware, recently home after four years on the Continent as a spy for England, finds life in the haute ton tedious. He secretly agrees to handle a few delicate matters for the Crown's private spy unit at Whitehall. A housebreaking at a country houseparty seems a strange assignment until he discovers that a French cipher, the key to Napoleon's war codes, was among the stolen items. As he follows its trail to London's notorious rookeries and into its glittering ballrooms, he faces a growing threat of treachery from more than one direction.
Lady Anne Ashburn missed her London season while caring for her invalid mother in the north country. A new nurse allows her to visit relatives, where she becomes embroiled in a blackmail plot. To avoid a terrible scandal, she goes to London to face down the scoundrel threatening her family.

The night of the elegant Christmastide Ball, Lucien finds Lady Anne standing over a corpse. What happens after that -- the risks they take, the intrusion of a notorious crime lord, society gossip, and good intentions gone awry -- sends them spiraling into danger and potential disaster for England's war effort.

An ever twisting plot sure to keep you turning the pages.