In the last decade, forensic DNA profiling has emerged as a powerful method to identify the guilty and exonerate the innocent. What makes it such a powerful technique? How does DNA profiling work? What are the advantages and drawbacks to the technology, and how is DNA profiling changing the way the criminal justice system functions? This guide answers these questions by outlining the basic methods used in forensic DNA profiling and explaining how DNA evidence has the power to convict or exonerate. Extraordinary stories illustrate how this new technology is expanding and transforming criminal justice systems across the globe.Spencer, Charlotte A. is the author of 'Genetic Testimony A Guide to Forensic DNA Profiling', published 2003 under ISBN 9780131423381 and ISBN 013142338X.