FBI
S04E20 Ghost from the Past
When a TSA agent is found murdered, the team embarks on a mission to track down a killer who is manipulating drug mules to breach airport security. Meanwhile, OA grapples with the lingering effects of his exposure to sarin gas and the emotional weight of the tenth anniversary of his friend's death in Afghanistan.
Season 4 Episodes
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All That Glitters (I)
Hacktivist
Trauma
Know Thyself
Charlotte’s Web
Allegiance
Gone Baby Gone
Fire and Rain
Unfinished Business
Fostered
Grief
Under Pressure
Pride and Prejudice
Ambition
Scar Tissue
Protective Details
One Night Stand
Fear Nothing
Face Off
Ghost from the Past
Kayla