Blackstone’s Police Manual, Volume 2: Evidence and Procedure by David Johnston and Glenn Hutton, Reviewed by Brian Rowland; Blood Evidence: How DNA is Revolutionizing the Way We Solve Crimes by Henry C. Lee and Frank Tirnady, Reviewed by Andy Day; Drugs and Crime: Second Edition by Philip Bean, Reviewed by Peter Jackson; Hard Cop, Soft Cop: Dilemmas and Debates in Contemporary Policing by Roger Hopkins Burke (editor), Reviewed by Dr Peter Kennison