Guideau's frustration mounts as witch-related cases prove hard to come by, but a string of horrific serial murders may prove the answer to her prayers. Meanwhile, the city police force's only mage has her own ideas about the case.

With all the signs pointing to a witch being behind the murders, Ashaf and Guideau must track down the perp. Unfortunately for them, however, this serial killer is powerful and always seems to be one step ahead.