This is the first textbook to offer a comprehensive and up-to-date account of police intelligence work based on current research, and to assess how intelligence may be used ethically to influence policing policy and practice. The author critically examines the development of intelligence structures and governance of contemporary intelligence collection. He goes on to assess the threats and opportunities to policing in the digital age, including the widespread use of social media and the emergence of 'Big Data'. Part of a new series for students and practitioners this much-needed textbook encourages reflexivity in practice.