This textbook looks at the main ethical questions that confront the criminal justice system – legislature, law enforcement, courts, and corrections – and those who work within that system, especially police officers, prosecutors, defence lawyers, judges, juries, and prison officers. John Kleinig sets the issues in the context of a liberal democratic society and its ethical and legislative underpinnings, and illustrates them with a wide and international range of real-life case studies. Topics covered include discretion, capital punishment, terrorism, restorative justice, and re-entry. Kleinig’s discussion is both philosophically acute and grounded in institutional realities, and will enable students to engage productively with the ethical questions which they encounter both now and in the future – whether as criminal justice professionals or as reflective citizens.