Sanctuary US - Season 3 Episode 20 - Receiving word that a large group of Abnormals has been spotted near a South Dakotan cave entrance, Magnus realizes it's the first wave of Abnormals emerging from Hollow Earth.
Sanctuary US - Season 4 Episode 1 - Magnus goes to 1898 London to try to stop Adam Worth from saving his daughter, which would alter the current time line in the Season 4 premiere.
Sanctuary US - Season 4 Episode 2 - As Abnormals continue to "invade" the surface, Will, Kate and the Big Guy seek to prevent all-out war with the Lotus Security Forces - while worrying about Magnus, who was last seen heading towards Praxis just before it was destroyed.
Sanctuary US - Season 4 Episode 3 - Will and Magnus must explain a mission gone wrong to a UN Inspector before the Sanctuary's funding is cut off.
Sanctuary US - Season 4 Episode 6 - Magnus gets tied up in an Abnormal scheme and Will runs into trouble at the Liberian Sanctuary.
"Sanctuary for None: Part 1"
A final confrontation looms as the team races to prevent the unleashing of a doomsday weapon.