Reese and Finch become trapped in a hospital that becomes ground zero for a deadly viral outbreak. Also, Samaritan's newest recruit has second thoughts and Shaw continues to struggle with reality.

Cast: Jim Caviezel, Kevin Chapman, Amy Acker, Michael Emerson, John West Jr., Jon Collin Barclay, David Chen, James Chen, James Ciccone, Joshua Close, Mark H. Dold, Martin Ewens, Ras Enoch McCurdie, Brian Michael, John Mondin