At the height of his criminal career, the infamous Dr. H.H. Holmes designed his castle of horrors in Chicago, where he rented rooms to unsuspecting victims visiting the 1893 World's Fair. Further benefiting from his victims, Holmes sold their skeletons to local medical schools.

This incredible true story is threaded with on-location footage such as his childhood home in New Hampshire and the Philadelphia courtroom where his trial was held. A visual tour-de-force of reenactments, expert interviews, and period photography.