Ghost from the Past
FBI · Season 4 · Episode 20
The murder of a TSA agent leads the team to hunt down a killer who is using drug mules to exploit airport security checkpoints. Also, OA struggles to cope with the aftermath of the sarin gas exposure and the 10th anniversary of his army friend's death in Afghanistan.
Season 4
- Episode 1 · All That Glitters (I)
- Episode 2 · Hacktivist
- Episode 3 · Trauma
- Episode 4 · Know Thyself
- Episode 5 · Charlotte’s Web
- Episode 6 · Allegiance
- Episode 7 · Gone Baby Gone
- Episode 8 · Fire and Rain
- Episode 9 · Unfinished Business
- Episode 10 · Fostered
- Episode 11 · Grief
- Episode 12 · Under Pressure
- Episode 13 · Pride and Prejudice
- Episode 14 · Ambition
- Episode 15 · Scar Tissue
- Episode 16 · Protective Details
- Episode 17 · One Night Stand
- Episode 18 · Fear Nothing
- Episode 19 · Face Off
- Episode 20 · Ghost from the Past
- Episode 21 · Kayla