Eldritch, cosmic horrors lurk just beyond our perception looking for any opportunity to run rampant through the mortal realms. The women of the Silver Circle are the greatest coterie of mystical heroes in the world, and the first, and best, line of defence against otherworldly entities. The Silver Circle is accustomed to dealing with all manner of threats, from awakened demi-gods, to sinister cults, to demonic mafias. But how does one contend with an infectious transmutation that transforms ordinary people into perfect copies of the same sorcerer? Can they be stopped, and can it be done without killing thousands of innocents?