Melissa Ham

Zivon Marin was one of Russia's top cryptographers until the October Revolution tore apart his world. Forced to flee to England after speaking out against Lenin, Zivon is driven by a growing anger and determined to offer his services to the Brits. But never far from his mind is his brother, whom Zivon fears died in the train crash that separated them. Lily Blackwell sees the world best through the lens of a camera and possesses unsurpassed skill when it comes to retouching and re-creating photographs.

1865 - Marietta Hughes never wanted to be a spy, but the family legacy of espionage is thrust upon her as the War Between the States rolls on. Unknown to her, the Knights of the Golden Circle - a Confederate secret society bent on destroying the Union her brother died for - has been meeting in a hidden lair beneath her home. Faced with the secrets of her late husband and his brother, whom she thought she could trust with anything, Marietta's world tilts out of control. Can she right it by protecting a Union agent infiltrating the KGC?

Three years into the Great War, England's greatest asset is their intelligence network - field agents risking their lives to gather information, and codebreakers able to crack every German telegram. Margot De Wilde thrives in the environment of the secretive Room 40, where she spends her days deciphering intercepted messages. But when her world is turned upside down by an unexpected loss, for the first time in her life numbers aren't enough.