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 Key themes in policing, a textbook series designed to fill a growing need for research-informed policing within Higher Education curriculums and in practice, edited by Megan O'Neill, Marisa Silvestri & Stephen Tong, this much-needed textbook encourages reflexivity in practice.