Stories from the set

In season 1, episode 12, when Tokyo fires a machine gun, there is a close-up of the ammunition belt, which is loaded with blank cartridges.

The creators of the series did not receive permission to film at the real Royal Mint of Spain, so instead they filmed at the building of the Spanish National Research Council. The interior scenes were shot in a studio.

The character nicknamed Tokyo borrowed a lot, from her hairstyle to her clothing style, from Mathilda, played by Natalie Portman, in the film «Léon» (Luc Besson, 1994).

The episodes were filmed in the order in which they were intended to be broadcast, and the participants in the filming were given scripts and lines only for the current plot so that no one would know what would happen later.

Denver's laugh was written into the plot even before Jaime Lorente was cast in the role. The script simply required a “creepy laugh,” and everyone who came to the audition interpreted that description in their own way.

Rio was the youngest member of the robbery. In the story, he was only 19 years old. The actor who played him, Miguel Herrán, was 20 years old at the time of filming.

In the opening credits of episode 3, the words "una mattina mi sono alzato" are written above the doorway. This is a line from the folk song "Bella Ciao," which is heard repeatedly on screen.