Based on the author’s more than 30 years of experience as a litigation witness, this book demonstrates how to present scientific testimony and survive the onslaught of cross-examination in court. It supplies introductory material, case studies, and critical observation, providing the necessary foundation for professionals and non-professionals to present facts and address pitfalls associated with the subjective nature of expert witnessing. Offering critical observations and judicial opinions, the book presents several exemplary civil, criminal, medical malpractice, and workers compensation cases. The author also includes his personal advice and tips on the business of expert witnessing.