 | Patrick Floersheim als Narrator (voice) |
 | Jonathan Brent als Self - Historian |
 | Joseph Stalin als Self (archive footage) |
 | Vyacheslav Molotov als Self (archive footage) |
 | Natalya Rapoport als Self - Daughter of doctor Yacov Rapoport |
| Gennady Kostyrchenko als Self - Historian |
| Yakov Etinguer als Self - Son of doctor Yakov Etinguer |
 | Nikita Petrov als Self - Historian |
 | Lavrentiy Beria als Self (archive footage) |
 | Georgi Malenkov als Self (archive footage) |
| Igor Prelin als Self - Former KGB colonel |
 | Solomon Mikhoels als Self (archive footage) |
| Natalia Mikhoels als Self - Daughter of Solomon Mikhoels |
| Nina Mikhoels als Self - Daughter of Solomon Mikhoels |
| Vladimir Vinogradov als Self (archive footage) |
| Lyubov Vovsi als Self - Daughter of doctor Miron Vovsi |
| Miron Vovsi als Self (archive footage) |
| Leonid Kogan als Self - Son of doctor Boris Kogan |
 | Rudolf Slánský als Self (archive footage) |
 | Leonid Mlechin als Self - Journalist |
| Philippe Saada | Director |
| Philippe Saada | Writer |
| Philippe Guillabert | Editor |
| Timothy Miller | Editor |
| Paul Morris | Editor |
| Gordana Othnin-Girard | Editor |
| Laurent Rucker | Scientific Consultant |
| Andrey Erastov | Camera Operator |
| Vladimir Polyansky | Camera Operator |
| Dudu Yitzhaki | Camera Operator |
| Aner Kamai | Assistant Camera |
| Gerard Alush | Sound |
| François Buren | Camera Operator |
| Cédric Pilard | Camera Operator |
| André Chemetoff | Camera Operator |
| Mathieu Leroy | Sound |
| Gabriel Doriez | Assistant Editor |
| Guillaume Guerry | Assistant Editor |
| Quentin Maury | Assistant Editor |
| Élise Levasseur | Assistant Editor |
| Marc-Aurèle Vecchione | Graphic Designer |
| Julie Guérineau | Graphic Designer |
| Franck-Olivier Chalard | Color Grading |
| Philippe Jacquet | Sound Mixer |
| Sara Brücker | Production Director |
| Isabel Marrache | Administration |
| Katya Panova | Production Assistant |
| Emily Ponsard | Production Assistant |
| Gabriel Scialom | Production Assistant |
| Amélie Sourice | Production Assistant |
| François Willig | Production Assistant |
| Héléna Zarifi | Production Assistant |
| François-Xavier Destors | Development Producer |
| Nolwenn Guellec | Development Producer |
| Jean-Marie Béasse | Additional Music |
| Marina Drozdova | Documentation & Support |
| Alexander Kiselev | Documentation & Support |
| Tatiana Averkina | Documentation & Support |
| Ilya Altman | Documentation & Support |
| Dominique Tibi | Delegated Producer |
