A unique insight into the hidden world of informers and related aspects of covert policing. Edited by Roger Billingsley, head of the Covert Policing Standards U

This book provides the most comprehensive and authoritative book yet published on the subject of criminal investigation, a rapidly developing area within the po

Years of surveillance-related leaks from US whistleblower Edward Snowden have fuelled an international debate on privacy, spying, and Internet surveillance. Muc

The 1992 edition of the FM 34-52 Intelligence Interrogation Field Manual.