About the Author: Richard Saferstein, PhD, retired in 1991 after serving for twenty-one years as the chief forensic scientist of the New Jersey State Police Laboratory, one of the largest crime laboratories in the United States. He currently acts as a consultant for attorneys and the media in the area of forensic science. During the O.J. Simpson criminal trial, Dr. Saferstein provided extensive commentary on forensic aspects of the case for the Rivera Live show, the E! Television network, ABC radio, and various radio talk shows. Dr. Saferstein holds degrees from the City College of New York and earned his doctorate degree in chemistry in 1970 from the City University of New York. From 1972 to 1991, he taught an introductory forensic science course in the criminal justice programs at the College of New Jersey and Ocean County College. These teaching experiences played an influential role in Dr. Saferstein's authorship in 1977 of the widely used introductory textbook Criminalistics: An Introduction to Forensic Science, currently in its twelfth edition. Dr. Saferstein's basic philosophy in writing Forensic Science: From the Crime Scene to the Crime Lab, 4th Edition, is to make forensic science understandable and meaningful to the nonscience reader while giving the reader an appreciation for the scientific principles that underlie the subject.

Dr. Saferstein has authored or coauthored more than forty-five technical papers covering a variety of forensic topics. He authored Basic Laboratory Exercises for Forensic Science, 2nd Edition (Prentice Hall, 2011), and coauthored Lab Manual for Criminalistics, 11th Edition (Prentice Hall, 2015). He has also edited the widely used professional reference books Forensic Science Handbook, Volume 1, 2nd Edition (Prentice Hall, 2002), Forensic Science Handbook, Volume 2, 2nd Edition (Prentice Hall, 2005), and Forensic Science Handbook, Volume 3, 2nd Edition (Prentice Hall, 2010). Dr. Saferstein is a member of the American Chemical Society, American Academy of Forensic Sciences, Canadian Society of Forensic Scientists, International Association for Identification, Northeastern Association of Forensic Scientists, and Society of Forensic Toxicologists.

In 2006, Dr. Saferstein received the American Academy of Forensic Sciences Paul L. Kirk award for distinguished service and contributions to the field of criminalistics.

Tiffany Roy, JD, made substantial contributions assisting Dr. Saferstein in the revision of this edition of the textbook, the supplements that accompany the textbook, and the new Revel interactive eText. Roy is a Forensic DNA expert with over eleven years of forensic biology experience in both public and private laboratories in the United States. She instructs undergraduates at Palm Beach Atlantic University in West Palm Beach, Florida; University of Maryland University College; and Southern New Hampshire University. She currently acts as a consultant for attorneys and the media in the area of forensic biology through her firm, ForensicAid, LLC. Roy holds degrees from Syracuse University, Massachusetts School of Law, and University of Florida in the areas of biology, law, and forensic science. Her teaching, legal writing, and testimonial experience help her to take complex scientific concepts and make them easily understandable for the nonscientist.