- 01
In the second-season premiere, Drs. Peter Farragut and Sarah Jordan are joined by Kyle Sommer when they battle a new deadly virus on a mysterious wooded island.
- 02
The CDC team continue to investigate the island; at the same time, they discover Peter's brother, Alan, is a member of Brother Michael's cult, and his warnings for them to leave the abbey fall on deaf ears.
- 03
Jordan and Peter travel outside the safety of the abbey to retrieve some specimens and discover just what's living in the woods; at the same time, Sister Amy plots to make the CDC team leave forever.
- 04
Michael struggles to keep the abbey under control as the CDC team move closer toward tracking the source of the pathogen; at the same time, Alan fights the urge to rejoin his former colleagues and comes to terms with the reality about Peter's allegiances. In the future, Walker takes a risk attempting to escape her delusional father.
- 05
Peter reveals is brother's secret and gets them both in trouble; at the same time, Kyle has his hands full trying to quarantine the orchard and the infected hive.
- 06
The CDC team are forced to work together when another outbreak threatens to overwhelm the Abbey.
- 07
Things go from bad to worse on the island. Elsewhere, Walker decides to go to St. Germain after learning about Brother Michael.
- 08
Sister Amy makes a power play for control of the Abbey as Alan and Kyle discover a possible cure for the virus.
- 09
Alan, Kyle and Winger search the woods for the tree with red sap that might be a cure for the pathogen.
- 10
At the abbey, Sister Amy makes a bargain for immortality; and in the woods, the race to find the Bleeding Tree intensifies now that Kyle is infected.
- 11
The Navy prepare to implement Plan B, a final solution to ensure that the virus and everyone infected with it never make it off the island.
- 12
Kyle and Jordan attempt to flee the island, but their escape is made more difficult by the followers who are hunting them down; Walker and Alan plan to halt ILARIA's deadly plan as soon as they find the Mother Tree.
- 13
In the Season 2 finale, Alan's relationship with Walker reaches a bloody climax, while his sibling feud with Peter erupts in flames. Elsewhere, Kyle does his best to protect a possible cure for the mycosis.
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