Sanctuary

Adam destroys Praxis and travels back to the 1890s to save his daughter. Helen travels back in time to stop him before he damages the timeline and destroys her future with it.

With Helen gone, Will is appointed the head of the Sanctuary Network. In the meantime, the Abnormal uprising continues to get worse and both Biggie and Kate are kidnapped.

The UN Security Council sends a task force headed by Greg Addison to investigate the Sanctuary. His disdain for Abnormals is matched by the disdain that Helen and team have for him.

Since the UN no longer backs the Sanctuary, Helen makes other arrangements for her finances. A planned meeting in Africa with a potential banker turns into a hostage situation.

Helen and Henry break into a government facility for Abnormal research called SCIU, only to find it is run by Nikola. Biggie and Will deal with an annoying Abnormal named Galvo.

Will's trip to Liberia turns bad when he suffers a head trauma from an attack. The trauma brings up powerful memories about his mother's death and the inadequacies of his father.

Henry and Declan lead a team to rescue a crew of a Russian icebreaker and the Abnormal passengers.

FBI agent Abby Corrigan's life is endangered after she is suddenly attacked by an unfamiliar Abnormal during an investigation.

A dangerous computer program threatens the Sanctuary, prompting Helen and Nikola to delve into the computer network.

A radical group of Abnormals plan a terrorist attack with the goal of starting a war between surface dwellers and Hollow Earth inhabitants.

When Helen and Will learn of a plan to capture a rare and dangerous Abnormal, they travel to a remote cave to stop the hunt.

When the Sanctuary is approached by an Abnormal leader about a radical plan for peace, Helen goes all in and pledges her full support.

When the human population is threatened by a virus that can turn humans into Abnormals, Helen enacts her ultimate plan for the Sanctuary network.