An English-language French-Belgian production, it is based on French writer Laurent Binet's 2010 novel HHhH, and focuses on Operation Anthropoid, the assassination of Nazi leader Reinhard Heydrich in Prague during World War II.

After the German Invasion of Poland and World War II breaks out, Heydrich is promoted to Chief of the Reich Security Main Office.

His Einsatzgruppen mobile death squads follow the German Army, committing genocide across Eastern Europe.

The film is based on Laurent Binet's novel HHhH about Operation Anthropoid, the assassination of Nazi leader Reinhard Heydrich in Prague.

[9] Boyd van Hoeij of The Hollywood Reporter wrote: "Finally less a two-stories-for-the-price-of-one situation than essentially two films of about an hour each, this is nonetheless a visually impressive Hollywood calling card for Jimenez, who almost manages to overcome the material’s structural weaknesses with impressive directorial verve.