Helix

Peter Farragut, Sarah Jordan and Dr. Kyle Sommer go to a mysterious island to investigate an unknown pathogen that killed everyone, except Leila, aboard the Mist of Avalon.

Jordan discovers Alan, Peter’s brother, is a member of Brother Michael’s cult, but despite Alan’s warnings she and Peter refuse to leave the Abbey and continue to investigate how Soren became infected.

Peter and Jordan leave the safety of the Abbey to retrieve some specimens and discover just what’s living in the woods; meanwhile Sister Amy plots to make them leave forever.

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.

Peter reveals his brother’s secret and gets them both in trouble, meanwhile Kyle has his hands full trying to quarantine the orchard and the infected hive.

The CDC team are forced to work together when another outbreak threatens to overwhelm the Abbey.