Spooks the Unofficial History of Mi5

The book provides a comprehensive history of MI5, detailing its evolution from its inception in 1909 to contemporary challenges, including counterterrorism efforts against Al Qaeda. It highlights remarkable stories of MI5 agents during both World Wars, featuring the infamous 'Double Cross (XX)' operatives who played crucial roles in espionage and deception. This narrative not only chronicles significant events but also reveals the agency's enduring impact on national security.