S4 E1 • 43m • HDTVMA

Sarah's respite in Iceland is ruined by a Neolution attack, and Sarah is forced to flee.

S4 E2 • 43m • HDTVMA

Sarah returns home to track down a new ally, following breadcrumbs to uncover the next facet.

S4 E3 • 43m • HDTVMA

Sarah reels from a shocking discovery, and becomes desperate to find answers.

S4 E4 • 43m • HDTVMA

After realizing her goals align with her former enemy, Sarah forms an alliance.

S4 E5 • 43m • HDTVMA

Sarah takes the day off to reconnect with Kira; Cosima infiltrates a fertility research center.

S4 E6 • 43m • HDTVMA

Sarah forges a dangerous deal that puts her family at risk; Art and Felix protect Krystal Goderitch.

S4 E7 • 43m • HDTVMA

Sarah regresses to old habits while struggling to cope with a loss; Sarah questions her strength.

S4 E8 • 43m • HDTVMA

Alison's loyalty to the clones is questioned; Cosima makes a final attempt to discover a cure.

S4 E9 • 44m • HDTVMA

Sarah forms an uneasy alliance with a former nemesis to bring down a common enemy.

S4 E10 • 46m • HDTVMA

After losing communication with Cosima, Sarah's alliance with Rachel ends.