A New York Times Bestseller
A USA Today Bestseller
September IndieNext Pick

A new door opens...
Once there were four worlds, nestled like pages in a book, each pulsing with fantastical power and connected by a single city: London.
After a desperate attempt to prevent corruption and ruin in the four Londons, there are only three:
● Grey London, thriving but barely able to remember its magical heritage
● Red London, ruled lately by the Maresh family, flourishing and powerful
● White London, left to brutality and decay
Now the worlds are going to collide anew—brought to a dangerous precipice by the discoveries of three remarkable magicians.
There's Kosika, the child queen of White London, who has nourished her city on blood and dreams—and whose growing devotion to both is leading her down a dangerous path.
Then there's Delilah Bard, born a thief in Grey London, who crossed the...