- Nigel Jones
- Â Self - Author and Historian 6 episodes, 2023-2024
- Guy Walters
- Â Self - Author and Historian 6 episodes, 2023-2024
- Shalina Patel
- Â Self - Historian 6 episodes, 2023-2024
- Tom Ward
- Â Narrator 6 episodes, 2023-2024
- Magnus Brechtken
- Â Self - Leibniz Institute for Contemporary History / ... 5 episodes, 2023-2024
- Karina Urbach
- Â Self - Author, 'Go-Betweens for Hitler' 3 episodes, 2023-2024
- Paul B. Jaskot
- Â Self - Author, 'The Architecture of Oppression' 3 episodes, 2023-2024
- Katherine Landdeck
- Â Self - Texas Woman's University 3 episodes, 2023
- Chris Holmes
- Â Reenactment Cast 3 episodes, 2023-2024
- Neil Summerville
- Â Reenactment Cast 3 episodes, 2023-2024
- Michael Allen
- Â Self - Author, 'The Business of Genocide' 2 episodes, 2023
- Piotr Setkiewicz
- Â Self - Auschwitz Memorial Research Center 2 episodes, 2023
- Luke Wales
- Â Reenactment Cast 2 episodes, 2023-2024
- Jadwiga Korowaj
- Â Self - Local Guide, In Collaboration with the Wolf's Lair Museum 1 episode, 2024
- Mark Walker
- Â Self - Union College, New York 1 episode, 2023
- Michael J. Neufeld
- Â Self - The National Air and Space Museum, SI 1 episode, 2023
- Karl Ludvigsen
- Â Self - Author, 'Professor Porsche's Wars' 1 episode, 2024
- Gerhard Rammer
- Â Self - Deutsches Technikmuseum 1 episode, 2023
- Alexander Schmidt
- Â Self - Documentation Center Nazi Party Rally Grounds 1 episode, 2023
- Dieter Stockmann
- Â Self - Local Historian 1 episode, 2024
- Kathryn Olesko
- Â Self - Georgetown University 1 episode, 2023
- Matthias Donath
- Â Self - Author, 'Architecture in Berlin 1933-1945' 1 episode, 2023
- Frank Jung
- Â Self - Head of Porsche Historic Archives 1 episode, 2024
- Christian Packheiser
- Â Self - Leibniz Institute for Contemporary History 1 episode, 2024
- Bernd Krabs
- Â Self - Museum Kummersdorf 1 episode, 2023
- John Guse
- Â Self - Author, 'Plassenburg Spirit: Nazi Technology' 1 episode, 2024
- Gunhild Lurås
- Â Self - Norwegian Industrial Workers Museum 1 episode, 2023
- Ingmar Arnold
- Â Self - Berliner Unterwelten 1 episode, 2023
- Richard Hausmann
- Â Self - Volkswagen Beetle Collector 1 episode, 2024
- Philipp Aumann
-  Self - Peenemünde Historical Technical Museum 1 episode, 2023
- John Bailie
- Â Self - Author, 'Donington Park: The Pioneers' 1 episode, 2024
- Susanne Willems
- Â Self - Author, 'The Desettled Jew' 1 episode, 2023
- Stephen Waring
- Â Self - University of Alabama, Huntsville 1 episode, 2023
- Harald Stark
- Â Self - Castellan of the Plassenburg 1 episode, 2024
- Luisa Hulsrøj
- Â Self - Mittelbau-Dora Concentration Camp Memorial 1 episode, 2023
- Egidius Fechter
- Â Self - Atomkeller Museum 1 episode, 2023
- Karsten Uhl
- Â Self - Mittelbau-Dora Concentration Camp Memorial 1 episode, 2023
- Dieter Landenberger
- Â Self - Head of Heritage, Volkswagen 1 episode, 2024
- Vincent Schmitt
- Â Self - Local Guide, In Collaboration with the Museum of the Atlantic Wall 1 episode, 2024
- Isabell Trommer
- Â Self - Author, 'Justification and Discharge: Albert Speer in the Federal Republic' 1 episode, 2023
- Rainer Karlsch
- Â Self - Institute for Contemporary History Munich-Berlin 1 episode, 2023
- Timothy Skelton
- Â Reenactment Cast 1 episode, 2024
- Matt Bone
- Â Reenactment Cast 1 episode, 2023
- James Wright
- Â Reenactment Cast 1 episode, 2023
- Benjamin Crockett
- Â Reenactment Cast 1 episode, 2023
- Rory Kaufhold
- Â Reenactment Cast 1 episode, 2023
