Although the film was produced by veteran action producer Joel Silver, Silver was removed from the editing room after one visit and the final cut of the film was supervised by actor Sean Penn and director Pierre Morel.
A closing-credits caveat acknowledges the fact that in Barcelona bullfighting has been banned for years.
Sean Penn had been seeking to work with Mark Rylance for a very long time. He invited him to join the movie and agreed to arrange the shooting schedules according to Rylance's availability.
The fighting style is Krav Maga.
The red sports car used in the film is a 1962 Alfa Romeo Giulietta Sprint.