This book investigates the psychological and physiological mechanisms behind faith healing to determine whether genuine medical cures occur or if other factors are at play. Louis Rose, a psychiatrist, utilizes his clinical background to examine numerous case studies of individuals claiming to have been cured by faith healers. He argues that the perceived successes of faith healing are largely attributable to psychosomatic effects, misdiagnosis, or the natural progression of disease rather than supernatural intervention.

Experts in the fields of medicine and psychology frequently cite this work as a foundational text for understanding the intersection of belief and health. Readers often note the clinical, objective tone of the prose, which prioritizes empirical observation over anecdotal claims.