In recent years forensic DNA evidence has been used by agencies and actors in the criminal justice system more and more frequently to both convict the guilty and exonerate the innocent. Cases that previously may have been unsolveable have been transformed into solvable cases where viable suspects can be identified and arrested or removed from suspect lists. This book presents examinations of how DNA, and some other forensic methods, are being used by our justice system and the issues that surround these uses.