Hidden Cities

From Author Wars - https://authorwars.com/books/hidden-cities-1219678.html

Overview:

Title: Hidden Cities
Author: Daniel Fox (pseudonym)
Year: 2011
Type: Novels

Editions/Publications:

Unknown. Hidden Cities (Unknown, Daniel Fox (pseudonym), Del Rey / Ballantine, ISBN-10: 9780345503039, $15.00, 416 pages, Trade Paperback, Novel)
2011 . Hidden Cities (2011, Daniel Fox (pseudonym), Del Rey / Ballantine, ISBN-10: 9780345524331, $11.99, pages, ebook, Novel)