Rosenberg, a surgeon and bench research scientist, has an epiphany fairly early in his clinical career: a patient with widespread cancer determined to be terminal, returns to the clinic sometime later, apparently disease-free without medical treatment. The scientist wonders if this patient's body could have tapped into some immunological or genetic healing pool. After having formulated the question, the author takes the reader through the trials and tribulations of framing, trying, failing, retrying and failing again to determine a way to test and prove how this phenomenon could have happened.

Over the many years of experimental work in the laboratory and on the wards of the National Cancer Institute, Dr. Rosenberg presents in a fashion largely accessible to the lay public a glimpse into this process. The work covers nearly three decades of the author's struggle to better understand and to develop new treatments for malignancies.