How have the intelligence services been forced to adapt to try and combat the threat of terrorism? In this gripping book, former security correspondent Mark Huband takes us inside the shadowy world of intelligence-gathering. Drawing on previously unseen material, unpublished letters and exclusive interviews, he explores how the role and purpose of 'intelligence' has evolved from its origins in nineteenth-century Ireland to today's fight against terrorism. Using his unique sources, he exposes the hidden blunders of the western intelligence agencies, such as the CIA's total misreading of the KGB's intentions during the Cold War, and the politicisation of intelligence in the build up to the Iraq War, and throws light on their evolving methods, including the manipulation of the media. Ranging from Kandahar to Belfast, this fast-paced book provides not only a compelling account of modern spycraft but a thoughtful and sobering analysis of its current fitness to combat the threat of 21st century terrorism.