The City of Malva is rife with puritanical hatred for witches. It is said they embody the Seven Deadly sins of mankind.
Amelia's only chance of saving her brother Nathaniel, a born witch, is to become a professed nun at Cathedral Reims. Enduring a series of trials including starvation, isolation, physical abuse and blood-sucking leeches, she will sacrifice all that she is to save him.
Complicating all of this is the fact that Amelia can see what is lurking in the shadows. Shadowmen, seeking witches like Nathaniel to join their ranks. This group of Shadowmen begin planning. The results could be devastating.
Oliver Cromwell, a dashing priest at Cathedral Reims, is the only one who can protect Amelia, her brother and save Malva. Yet, he may prove to be more dangerous than the shadows themselves.