Complete story — includes the ending
Sarah surrenders to Dyad hoping to secure Kira's safety but is imprisoned. Rachel deliberately separates Delphine from Cosima by sending her to Germany. Ethan commits suicide to prevent Rachel from getting the code key. Kira steals a cell phone and contacts Cal, who goes to Mrs. S. They meet Paul, who is revealed to be in the military, and Marion Bowles, a Dyad executive. Scott and Cosima devise a plan to break Sarah free by making a makeshift weapon out of a fire extinguisher. Rachel sabotages Cosima's treatment by destroying the bone marrow, at which point Sarah uses the weapon, shooting a pencil into Rachel's eye. They all escape Dyad with the aid of Marion, who invites Sarah to meet her the next day. The next morning, Helena leaves, but is kidnapped by the military as arranged by Paul and Mrs. S. Kira gives Cosima Ethan's book with the sequences needed to save her life. Sarah visits Marion's home, and meets Charlotte, a clone of Kira's age and the only survivor of the second Leda batch. Marion explains that the military controlled a male clone project, Castor, with the clones looking like Mark.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Orphan Black episodes. HTML formatting and reference markers removed. · Content license