Art's intervention to get answers ruins Sarah's chance to bring Helena back to sanity, and the Orphans must choose whether to form an alliance with their creators.
Mrs S orders the girls to celebrate Felix's art opening; Sarah remains suspicious that S is hiding something.
An injured Sarah is determined to stay strong enough to rescue Cosima, and journeys into the island's centre to discover a mysterious village.
Sarah and Kira spend some time at home; Cosima joins Delphine at the mansion; secrets about Kira's gifts are revealed.
With the siege reaching its climax, Helena decides to seek refuge behind enemy lines; Sarah and Art struggles to protect Helena and end the siege.