The episode centers on a high-stakes retaliatory plot orchestrated by the imprisoned drug lord (David Zayas), whom the team had arrested in Season 3. Despite being behind bars, Vargas manages to coordinate a series of attacks targeting the FBI agents and their families. Key Plot Points
is the ninth episode of the fourth season of the procedural drama FBI , which originally aired on December 14, 2021. Episode Overview [S4E9] Unfinished Business
: The team discovers that Vargas has placed "unfinished business" hits on several members, leading to a race against time to neutralize his associates and secure the safety of their loved ones. The episode centers on a high-stakes retaliatory plot