FBI 4x09 "Unfinished Business" Season 4 Episode 9 Promo Trailer HD - After Rina is critically wounded while heading to work with Jubal, the team makes the chilling discovery that a vengeful Vargas (David Zayas) orchestrated the shooting from behind bars and continues to target the rest of their team and their loved ones, on the CBS Original series FBI, Tuesday, December 14th on CBS, and available to stream live and on demand on Paramount+.