New York Times bestselling author Tosca Lee brings a modern twist to an ancient mystery surrounding the most notorious female serial killer of all time. A fast-paced thriller for fans of Lee’s Books of Mortals series with Ted Dekker, Dan Brown’s THE DA VINCI CODE and BBC America’s hit series "Orphan Black."

Emily Porter is the descendant of a serial killer. Now, she’s become the hunted.

She’s on a quest that will take her to the secret underground of Europe and the inner circles of three ancient orders --- one determined to kill her, one devoted to keeping her alive, and one she ultimately must save.

Filled with adrenaline, romance and reversals, THE PROGENY is the present-day saga of a 400-year-old war between the uncanny descendants of “Blood Countess” Elizabeth Bathory, the most prolific female serial killer of all time, and a secret society dedicated to erasing every one of her descendants. It is the story about the search for self amidst centuries-old intrigues and Europe’s underground scene…and one woman’s mission to survive.