The next subject for Geary's award-winning and increasingly popular series is a 19th century mass murderer operating around the Chicago World's Fair. Find out who had the capacity to build a literal house of horrors replete with chutes for dead bodies, gas chambers and surgical rooms. Be invited through Geary's meticulous recreation to briefly dwell in the deranged world and mind of a character so ugly that he methodically murdered up to 200 people, especially targeting young women. Darkly compelling and disturbingly true.