Alex and Ryan get close when the trainees leave campus for their first undercover assignment; Alex tells her side of the story in a public interview.
A visit to the foster home carries deadly consequences; Marcus and the Rev. Tomas attempt to draw the demon out; Rose is targeted by the demon's wrath; the Rev. Bennett and Mouse search for an old adversary.
The CDC teams learns the real purpose of the infection and Alan (Billy Campbell) and Julia (Kyra Zagorsky) make a perilous journey to retrieve the canister that has the original source virus.