Expanding on ideas proposed by leading thinkers throughout the history of forensic science, Principles and Practice of Criminalistics: The Profession of Forensic Science outlines a logical framework for the examination of physical evidence in a criminalistics laboratory. The book reexamines prevailing criminalistics concepts in light of both technical and intellectual advances and provides a way of conceptualizing physical evidence from its origin through its interpretation. Conceptually, the book explains what forensic scientists do and discusses the philosophical and practical considerations that affect the conduct of their work. To be sure, some of the ideas challenge conventional wisdom on the subject, and as such, are bound to provoke discussion among members of the forensic community. Against this background, Principles and Practice of Criminalistics: The Profession of Forensic Science is a tremendously valuable reference for professionals involved in forensic science and other related fields.

Significant advances in DNA analysis techniques have surfaced since the 1997 publication of the bestselling An Introduction to Forensic DNA Analysis. DNA typing has become increasingly automated and miniaturized. Also, with the advent of Short Tandem Repeat (STR) technology, even the most minute sample of degraded DNA can yield a profile, providing valuable case information. However, just as the judicial system slowly and reluctantly accepted RFLP and AmpliType® PM+DQA1 typing, it is now scrutinizing the admissibility of STRs.

Acknowledging STR typing as the current system of choice, An Introduction to Forensic DNA Analysis, Second Edition translates new and established concepts into plain English so that laypeople can gain insight into how DNA analysis works, from sample collection to interpretation of results. In response to the shift toward more efficient techniques, the authors cover the legal admissibility of STR typing, expand the chapter on DNA databases, and revise the section on automated analysis. They also present key decisions and appellate or supreme court rulings that provide precedent at the state and federal levels.

Discussing forensic DNA issues from both a scientific and a legal perspective, the authors of An Introduction to Forensic DNA Analysis, Second Edition present the material in a manner understandable by professionals in the legal system, law enforcement, and forensic science. They cover general principles in a clear fashion and include a glossary of terms and other useful appendices for easy reference.