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.