Jack Comstock, MD, graduate of the CU School of Medicine, kept a diary for three years, from late 1941 to early 1945. In that diary is a powerful tale of survival, compassion, and hope: the only known real-time journal of a POW doctor in World War II. Editor’s Note: This article was originally published by University of Colorado Anschutz Medical Campus in a five-part series. It has been adapted, with minimal changes for readability, for The Colorado Magazine.