A courier (Robert Knepper) is scheduled to deliver a valuable shipment to an Iranian spy. Following a car chase, Elizabeth and Malik manage to arrest the courier, and they learn he has imprisoned Seth Nelson, an NSA analyst. Nelson is entombed and only has a limited amount of air left. While the FBI searches for him, the courier escapes. Red coerces the courier's contact to help find him, and with that information Malik and Ressler eventually track the Courier and then kill him in self-defense. Read More...