Forensic DNA evidence has helped convict the guilty, exonerate the wrongfully convicted, identify victims of genocide, and reunite families torn apart by war and repressive regimes. Yet many of the scientific, legal, and ethical concepts that underpin forensic DNA evidence remain unclear to the general public; judges; prosecutors; defense attorneys; and students of law, forensic sciences, ethics, and genetics. This book examines the history and development of DNA forensics; its applications in the courtroom and humanitarian settings; and the relevant scientific, legal, and psychosocial issues. It describes the DNA technology used to compare the genetic profile of a crime scene sample to that of a suspect, as well as the statistical interpretation of a match. It also reviews how databases can be searched to identify suspects and how DNA evidence can be used to exonerate the wrongfully convicted. Recent developments in DNA technology are reviewed, as are strategies for analyzing samples with multiple contributors. The book recounts how the Grandmothers of the Plaza de Mayo searched for children kidnapped during military rule in Argentina, as well as more recent efforts to locate missing children in El Salvador. Other chapters examine the role that DNA forensics played in the identification of victims of genocide in Bosnia and of terrorism in the post-9/11 era. Social anthropologists, legal scholars, and scientists explore current applications of DNA analysis in human trafficking and mass catastrophes; border policies affecting immigration; and the ethical issues associated with privacy, informed consent, and the potential misuse of genetic data.