Book excerpt: This book, now in its second edition, is the first and most exhaustive text covering the still growing popularity of cold case investigations which locate perpetrators and free the innocent. The new edition adds approximately 80 pages of content, including material on clandestine graves and investigating cold gang cases. The book merges theory with practice through the use of case histories, photographs, illustrations and checklists that convey essential, fundamental concepts while providing a strong, practical basis for the investigative process.