In researching his acclaimed true-crime books, Philip Carlo interviewed some of the most infamous criminals of our times in prisons and on death rows throughout the country. He was able to forge trusting relationships with them, enabling him to extract the facts behind their infamous acts and identify what motivated them to commit their horrific crimes. While working on The Ice Man, he learned he had amyotrophic lateral sclerosis (ALS), a terminal illness that causes all of the muscles in the body to atrophy over time. After years of penetrating the minds of killers, Carlo found himself being pursued by the grim reaper. Rather than give up, Carlo continued to work. In The Killer Within, Carlo documents his difficulties with ALS and explains how he managed to continue writing prodigiously in the face of adversity. This is a gripping, suspenseful page-turner that pulls the listener into the netherworld of Mafia bosses, hit men, and serial killers, as well as the hard realities of dealing with a fatal disease.