The book of the unwinding : a witches of New Orleans novel
(Book)

"With their magic diminishing, warring factions of New Orleans witches desperately search for the Book of the Unwinding--a legendary grimoire, hidden by spells, that holds the key to unimaginable powers. As a ruthless struggle erupts in a maelstrom of malevolent magic, psychic Nathalie Boudreau finds her destiny intertwined with that of an exiled witch. Her name is Alice Marin, a vulnerable young woman trapped in a realm of illusion. Only Nathalie can free her, but first she must come to understand and master her own extraordinary abilities. Now, in a world where betrayals have become the order of the day, it will fall to two women to restore rightful balance amid terrifying chaos." --,(Source of summary not specified)