TY - BOOK AU - Harfield,Clive AU - Harfield,Karen TI - Covert investigation T2 - Blackstone's practical policing SN - 9780198743293 AV - KD8335 .H37 2016 PY - 2016/// CY - Oxford, United Kingdom, New York, NY PB - Oxford University Press KW - Undercover operations KW - Law and legislation KW - Great Britain KW - Police patrol KW - Surveillance operations N1 - Includes bibliographical references and index; Navigating a moral minefield -- Statutory principles in covert investigation -- Authorization and governance -- Understanding the operating environment -- Managing covert investigation -- Directed surveillance --- Intrusive surveillance -- Interference with property or wireless telegraphy and entry onto land -- Covert investigation and computers -- Examining mobile phones -- Commmunications data -- Interception of communications -- Covert human intelligence sources -- Covert investigation abroad -- What does good covert investigation look like? ER -