Helena takes shelter behind enemy lines, and Sarah and Art struggle to protect her and end the siege.
Sarah reels from a shocking discovery, and becomes desperate to find answers; after following a lead, Sarah finds herself in a harrowing encounter.
Sarah takes the day off to reconnect with Kira; Cosima infiltrates an exclusive Neolutionist fertility research center and makes a shocking discovery of their clandestine experiments.
A devastating loss is suffered; Sarah learns that Helena has been kidnapped; Clone Club bands together to find Helena before her babies are born.
Mrs. S orders the sisters to celebrate Felix's art opening; Sarah remains on edge with a nagging suspicion that S is hiding something.
