Agent 21: Codebreaker
Author: Chris Ryan
Publisher: Random House
ISBN: 9781849410090
Year Published: 2013
Chris Ryan's third book on 17-year-old Zak Darke, also known as Agent 21 and working undercover for a UK shadowy government agency, has him taking on another dangerous assignment. As a highly trained agent, he has to intercept the terrorist who is planning to bomb several locations in London.