: Stands for Version Originale Sous-Titrée en Français , meaning the episode is in its original Spanish audio with French subtitles.
The terms attached to the title refer to the technical specifications of the video file often found on digital distribution platforms: El Inmortal S01E06 VOSTFR HDTV
: Set in 1990s Madrid, the show explores how "The Immortal"—a name given to the gang leader who survived multiple assassination attempts—rose to power. : Stands for Version Originale Sous-Titrée en Français