Nineteen-year-old Emma Bau takes on a new identity after her husband, Jacob, is forced to disappear to escape Nazi forces, leaving Emma behind to face the atrocities of war and deny her growing attraction to another man.

Cracow, 1893. Zofia Turbotyńska--professor's wife and socialite--is bored at home, with little to do but plan a charity auction sponsored by the wealthy residents of a local nursing home and the nuns who work there. But when one of those residents is found dead, Zofia finds a calling: solving crimes. Ridiculed by the police, who have declared the deaths of natural cause, she starts her own murder investigation, unbeknownst to anyone but her loyal...

Krakow, 1585. Summoned by the King of Poland to help save his dying niece, Edward Kelley and his master, alchemist and scholar Dr John Dee, discover a dark secret at the heart of the Countess Bathory's malady. But perhaps the cure will prove more terrifying than the alternative. England, 2010. Jackdaw Hammond lives in the shadows, a practitioner of occult materials. But when she learns of a young woman found dead on a train, her body covered in arcane...