Characters played by Jeff Mudgett
Self - Great-Great-Grandson of H.H. Holmes
Characters played by Amaryllis Fox
Self - Former CIA Operative
Characters played by Conor Hall
Self - Narrator
Characters played by Mark Granville Merritt
Recreation Actor
Characters played by Arthur DeLaintis
Recreation Actor
Characters played by Christine Hauer
Recreation Actor
Characters played by Steven Mackintosh
Self - Narrator
Characters played by Marissa Rose Gordon
Recreation Actor
Mrs. Harvey
Characters played by Judy Wilson
Recreation Actor
Characters played by Erin Elizabeth Eichhorn
Recreation Actor
Characters played by Florence Marcisak
Recreation Actor
Characters played by Larena Danielle
Recreation Actor
Characters played by Kristin Samuelson
Recreation Actor
Characters played by Dana Simonetti
Recreation Actor
Characters played by Kelley Evans
Recreation Actor
Characters played by Mallory Kinney
Recreation Actor
Characters played by Malcolm Magri
Recreation Actor
Characters played by Regina Misercola
Recreation Actor
Characters played by Damir Mrkulic
Recreation Actor
Characters played by Daniel Perry
Recreation Actor
Characters played by Cameron Moir
Recreation Actor
Benjamin Pitezel
Characters played by Sarah Paton
Recreation Actor
Characters played by James Zeiss
Recreation Actor
Characters played by Natasha Thweatt
Recreation Actor
Characters played by Denisa
Recreation Actor
Mrs. Alexandra
Mrs Alexandra
Mrs.Alexandra
Characters played by Adam Selzer
Self - Author and Holmes Expert
Self - Author and Historian
Characters played by Raymond W. Johnson
Self - Former Chicago Area Detective
Characters played by Andrew Bennett
Recreation Actor
Characters played by Kristin Cara Ankuta
Recreation Actor
Characters played by Justin Blake
Recreation Actor
Louis Diemschutz
Characters played by Merritt Chase
Recreation Actor
Wynne Baxter
Characters played by Cecillia Johnson
Recreation Actor
Characters played by Jackie Muha
Recreation Actor
Characters played by Andreas Pliatsikas
Recreation Actor
Pipe Man
Characters played by Blaire O'Leary
Recreation Actor
Characters played by Denisa Juhos
Mrs. Alexandra
Characters played by John Borowski
Self - H.H. Holmes Author and Documentarian
Characters played by Page Selinsky
Self - Biological Anthropologist
Characters played by Dennis Ryan
Self - Forensic Document Examiner
Characters played by Charles Breese
Recreation Actor
Characters played by Jeremy Francis Bell
Recreation Actor
Characters played by Nick Bialis
Recreation Actor
Characters played by Adam Braunstein
Recreation Actor
Characters played by Dylan Bibb
Recreation Actor
Young H.H. Holmes
Characters played by Robert DiPiero
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Characters played by Rocco Nevers
Recreation Actor
Characters played by Josh Coleman
Recreation Actor
Characters played by Michael Enright
Recreation Actor
Characters played by Alex Eckstorm
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Characters played by John DiRenzo
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Characters played by Robert Eric
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Characters played by Rick Doldy
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Characters played by Shannon Mann
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Characters played by Roger Hervas
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Characters played by Rich Henkels
Recreation Actor
Characters played by Chrissy Laboy
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Characters played by Drew Low
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Characters played by Noah Pielow
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Characters played by Jack Malykin
Recreation Actor
Characters played by Dakota Lustick
Recreation Actor
Characters played by Jonathan Tierney
Recreation Actor
Characters played by Kyle Merker
Recreation Actor
Characters played by Jenette Nelligan
Recreation Actor
Characters played by Paul Pricoli
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Characters played by Ian Stark
Recreation Actor
Characters played by Tara Segda
Recreation Actor
Characters played by Jack Wilburn
Recreation Actor
Characters played by Raymond Nolan
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Characters played by Patricia Yeazell
Mary Mudgett
Recreation Actor
Characters played by Greg Regnier
Self - Underwater Reconnaissance Expert
Self - Underwater Surveyor
Characters played by Paloma Galzi
Self - Forensic Sketch Artist
Characters played by Denise Syndercombe-Court
Self - Forensic Science Department King's College London
Characters played by Andrew Lambert
Self - Maritime Historian
Characters played by Riley Smaltini
Howard Pitezel
Recreation Actor
Characters played by Jessica Cherniak
Nellie Pitezel
Recreation Actor
Characters played by Richard Jones
Self - Historian and Jack the Ripper Author
Characters played by Tim Samuelson
Self - Curator
Chicago Cultural Center
Characters played by Sean Doucette
Self - Facial Recognition Expert
Characters played by Chris Day
Self - Reader Adviser
Domestic Records
Characters played by Chuck Rhine
Self - Underwater Recovery Specialist
Characters played by Donald Rumbelow
Self - Former London Police Officer
Characters played by Geoff Lindsey
Self - Forensic Linguist and Speech Coach
Characters played by Doug Maloney
Self - Appellate Attorney
Characters played by Al Hunter
Self - Irvington Tour Guid
Characters played by Lloyd Meyer
Self - President
Ozinga Concrete Chicago
Characters played by Henio del Castillo Jr.
Self - Cremation Specialist
Characters played by Gerald Sullivan
Self - President of Cremation Society of Illinois
Characters played by Paul Begg
Self - Jack the Ripper Historian and Author
Characters played by James Leonard
Self - Archivist
Characters played by John Harris
Self - Professor of Linguistics
Characters played by Rhonda Hunter
Self - Irvington Tour Guid
Characters played by Sam Cox
Self - Anthrologist
Penn Museum
Characters played by John Dickey
Self - President
Gilmanton Historical Society
Characters played by Roger Lane
Self - Crime Historian and Author
Characters played by Frogg Moody
Self - Whitechapel Society Editor and Author
Characters played by Sarah Halter
Self - Indiana Medical History Museum
Characters played by Stewart Evans
Self - Author and Former Police Officer
Characters played by Diane Dillon
Self - Historian and World's Fair Expert
Characters played by Tim Bechtel
Self - Geophysicist
Characters played by Pat Clarke
Self - Local Historian
Characters played by Harold Schechter
Self - True Crime Author & Historian
Characters played by Peter Vanezis
Self - Professor of Forensic Medical Sciences
Characters played by Steve Barnett
Self - Irvington Historical Society
Characters played by Ike Ilkiw
Self - Retired New York City Detective
Characters played by Karen Abbott
Self - Historian and Author
Characters played by Rachel Jordan
Self - Director of Information Retrieval
Characters played by Andy Parlour
Self - Shawl Owner
Characters played by Thomas Rowan
Self - History Reporter
Philadelphia Inquirer
Characters played by Amy Favret
Self - Senior Archeologist
AECOM
Characters played by Annie Anderson
Self - Historian
Eastern State Penitentiary
Characters played by Sue Parlour
Self - Shawl Owner
Characters played by Emily Billig
Recreation Actor
Characters played by Allen Koenigsberg
Self - Vintage Audio Recording Collector
Characters played by Chuck Rhein
Self - Underwater Recovery Specialist
Characters played by Ted Beidler
Recration Actor
Characters played by Bill Giffin
Self - Cemetery Superintendant
Characters played by Robyn Babina
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Characters played by Julian Bibb
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Characters played by Julie Chapin
Lucy Belknap
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Characters played by Robert Cunniff
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Characters played by Andrew Hunt Gordon
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Characters played by Bill Conner
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Characters played by Robbie Dema
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Characters played by William Giaimo
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Characters played by Billy Freda
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Characters played by Angel
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Characters played by Devin Henry
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Characters played by Andrew Gombas
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Characters played by John Gronbeck
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Characters played by Brianna Harmon
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Characters played by Sarah Patton
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Characters played by Shaun Kennedy
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Characters played by Christopher Sanchez
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Characters played by Eric Robertson
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Characters played by Steven Miller
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Characters played by Ryan Nieves
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Characters played by Christopher Sanchez
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Characters played by Estella Ostrom
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Characters played by Zach Meyers
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Characters played by Jesse Ostrom
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Characters played by Frank Osso
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Characters played by Carl Zurhorst
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Characters played by Lenna Parisyan
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Characters played by Nell Worden
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Characters played by Elise Valderrama
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Characters played by Rich Henkels
Lawyer
Characters played by Briana Justina Harmon
Georgiana Yoke
Characters played by John Gronbeck-Tedesco
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Characters played by Sunny Bishop
Self
Characters played by Marshall Bishop
Self