Book excerpt: Controversies in Innocence Cases in America brings together leading experts on the investigation, litigation, and scholarly analysis of innocence cases in America, from legal, political and ethical perspectives. The contributors, many of whom work on these cases daily, investigate contemporary issues presented by innocence cases and the exoneration movement as a whole. These issues include the challenges faced by the movement, causes of wrongful convictions, problems associated with investigating, proving, and defining 'innocence', and theories of reform. Each issue is placed within a multi-disciplinary perspective to provide cogent observations and recommendations for the effective handling of these cases, and for what changes should be adopted in order to improve the American criminal justice system when it is faced with its most harrowing sight: an innocent defendant.