- Christopher Hatfield
- Self - Narrator
- Otto Philipp Graf von Stauffenberg
- Self - Stauffenberg's Nephew
- Ewald von Kleist
- Self - 20th July Conspirator
- Konstanze von Schulthess
- Self - Stauffenberg's Daughter
- Berthold Graf von Stauffenberg
- Self - Stauffenberg's Eldest Son
- Ulrich de Maizière
- Self - Officer, General Staff, Wehrmacht
- Richard Overy
- Self - Historian
- Horst von Oppenfeld
- Self - First Lieutenant, Afrika Corps
- Klaus Burk
- Self - Lieutenant, Afrika Corps
- Christoph Scheibler
- Self - Lieutenant, Wolf's Lair
- Kurt Salterberg
- Self - Guard, Security Zone 1a
- Erich Kretz
- Self - Duty Driver, Wolf's Lair
- Alfons Schulz
- Self - Switchboard Operator, Wold's Lair
- Rudolf Kuphal
- Self - Grossdeutschland Guard Battalion
- Peter Becker
- Claus Schenk Graf von Stauffenberg
- Julia Brendler
- Nina Freiin von Lerchenfeld
- Pierre Kiwitt
- Berthold von Stauffenberg
- Matthias Heidepriem
- Reenactment
- Wilhelm Manske
- Reenactment
- Tilo Nest
- Reenactment
- Nicholas Reinke
- Oberleutnant Werner von Haeften
- Bernd-Uwe Reppenhagen
- General Friedrich Olbricht
- Sebastian Schäfer
- Oberst Mertz von Quirnheim
- Jörg Vincent Malotki
- Oberfeldwebel Kolbe
- David L. Price
- Sturmbannführer Otto Günsche
- Wojciech Ziemianski
- Adolf Hitler
