The forensic entomologist turns a dispassionate, analytic eye on scenes from which most people would recoil - human corpses in various stages of decay, usually the remains of people who have met a premature end through accident or mayhem. To Lee Goff and his fellow forensic entomologists, each body recovered at a crime scene is an ecosystem, a unique micro-environment colonized in succession by a diverse array of flies, beetles, mites, spiders, and other arthropods: some using the body to provision their young, some feeding directly on the tissues and by-products of decay, and still others preying on the scavengers. Using actual cases on which he has consulted. Goff shows how knowledge of these insects and their habits allows forensic entomologists to furnish investigators with crucial evidence about crimes. Even when a body has been reduced to a skeleton, insect evidence can often provide the only available estimate of the post-mortem interval, or time elapsed since death, as well as clues to whether drugs have contributed to the death. An experienced forensic investigator who regularly advises law enforcement agencies in the United Sates and abroad, Goff is uniquely qualified to tell the fascinating if unsettling story of the development of practice of forensic entomology.