Transgressive Border Crossing (S04E02)

Having successfully escaped a Neolution ambush in Iceland, Sarah arrives back home determined to find a mysterious new ally. While Cosima grapples with the absence of Delphine, Alison and Donnie welcome an increasingly ravenous Helena, who is expecting a child. Concurrently, Felix, sensing his detachment from the group, sets out on a personal quest to uncover his own identity.