Sanctuary

Helen Magnus pursues Adam back to London in the year 1898, where she attempts to prevent him from damaging the timeline.

With Magnus missing in action, Will Zimmerman is appointed head of the Sanctuary Network. But his authority is overlooked by the United Nations.

Will and Magnus must explain to a UN representative why an abnormal was allowed to escape in Indonesia. Henry's girlfriend announces she is pregnant.

As Magnus waits for businessman Richard Feliz in an airport in Grande Comore, armed robbers who are also in search of him take the airport hostage.

While attempting to infiltrate a secret Abnormal testing facility, Magnus and Henry encounter an old friend whose loyalties are now in question.

After being mugged, Will suffers from flashbacks featuring his estranged father. Magnus and Henry work reluctantly with some flying Abormals.

Henry and a UK-based Sanctuary team investigate a stranded icebreaker in the Bering Sea, in which the crew and Abnormals on board killed each other.

After being attacked in an alleyway, Abby gradually begins to change into an Abnormal. Magnus devises a solution that is highly risky.

Tesla reveals that a sentient nanite has infected the computer's base system and is threatening to distribute itself across the globe.

When Kate warns Magnus about some Abnormals plotting a terrorist attack, she and Addison learn that Bigfoot may be a part of the terrorist cell.

Magnus and Henry track the SCIU team to Bolivia, where they are tracking a legendary – but elusive – creature.

Will and Magnus's relationship is strained when she agrees to meet Caleb, who claims that he wishes for his people to leave peacefully with humans.

With the Old City homeland threatened, Helen executes a desperate plan and Henry discovers that the SCIU has the ability to destroy the Abnormals.