The Passage

As an imminent flu epidemic threatens the U.S., federal agent Brad Wolgast is tasked with bringing in a 10-year-old girl to be used as a test subject at a secret medical facility; after meeting her, Brad's loyalties are tested.

Amy and a wounded Brad are on the run and seek refuge with Brad's ex-military instructor; Dr. Lear reflects on the decisions that compelled him to involve Fanning in his research; the epidemic spreads, and the race for a cure intensifies.

Brad strikes a deal with Sykes and Richards to stay with Amy at Project NOAH as they begin to test the virus on her; Brad learns some harsh truths regarding the state of inmates in 4B; Babcock sheds light on her past.

Wolgast convinces Sykes and Lear to let him and Amy outside of the facility for exercise; Fanning's hold on those kept inside Project Noah grows stronger; the virals gain power over the facility's staff.

A high-ranking official arrives at Project Noah; Brad and Amy strategize an escape plan with the help of an unlikely accomplice; Sykes and Richards begin to question each other's motives; a shaky past between Lear, Elizabeth and Fanning is revealed.

Tensions are high with a viral on the loose; Guilder and Richards rush to mobilize a search party; Amy volunteers to help in an unexpected way, causing friction with Brad; Lear tries to help Elizabeth understand the tough decisions he's made.