Analyzing original data, Casper explores early foetal surgery efforts and the emergence of the unborn patient in the 1960s. She examines several related practices, including foetal physiology, diagnostic technologies, animal experimentation, and foetal wound healing research, and the ways in which they have shaped foetal surgery. She presents ethnographic data collected at one of the premier US foetal treatment facilities, offering a behind-the-scenes look at the various kinds of work involved in operating on human foetuses. She also examines the many ethical dilemmas involved in research on human subjects in experimental foetal surgery. Perhaps most significantly, the book draws attention to the many ways in which foetal surgery affects women's health.