What was the "Murder Castle" in which HH Holmes is said to have killed countless victims REALLY like? Where did the secret passages lead? How many people were killed there? What was it like to live and work in the building? Adam Selzer, author of THE GHOSTS OF CHICAGO (Llewellyn 2013), THE SMART ALECK'S GUIDE TO AMERICAN HISTORY (Random House 2009), and others, who regularly speaks about Holmes on such programs as HAUNTED HISTORY and HOTEL HISTORY, takes his "what do we know and how to we know it" approach to this fascinating topic, curating this collection of diagrams, drawings, eyewitness accounts, and more, each with detailed background information and analysis. Newly edited to present the stories in a more chronological order, and now stretching to 55,000 words, the book contains everything down to the combination to the soundproof vault! It includes: