Over the years, there have been significant advances in DNA analysis techniques. With the advent of Short Tandem Repeat (STR) technology, even the most minute sample of degraded DNA can yield a profile and provide valuable case information. This second edition reflects this technological shift and covers its legal admissibility. It also considers the shift to automation and computerization. The authors discuss forensic DNA issues from both a scientific and legal perspective and present the material in a manner understandable by professionals in the legal system, forensic science, and law enforcement.