The precarious equilibrium among the four Londons has reached its breaking point. Once brimming with the red vivacity of magic, darkness casts a shadow over the Maresh Empire, leaving a space for another London to rise. Kell begins to waver under the pressure of competing loyalties. Meanwhile, an ancient enemy returns to claim a crown and a fallen hero is desperate to save a decaying world...

V.E. Schwab is the No.1 New York Times bestselling author of ten books, including This Savage So ...