The third in the fantastical series set in a world where magicians travel between parallel versions of London. Follows on from }A Darker Shade Of Magic{ and }A Gathering Of Shadows{. The author also wrote }Vicious{ and }This Savage Song{. EMBARGO NOTICE: The work upon receipt must be stored in a secure area and must not be put on sale to the public before start of business on 21st February 2017.