Plot summary
Frustrated Kira won't tell her what she does with Rachel, an irritated Sarah is taken by Siobhan to con their way into a mental hospital to see a patient who has information on Westmorland. Visiting Helena in a convent along the way, Helena tells Sarah that Kira's connection to the Ledas is special and Kira will have to eventually deal with what the clones do. The patient is Dr. Virginia Coady, drugged and hidden there by Susan Duncan to keep her away from Westmorland. Before the cloning work began, Coady and Westmorland pushed a boy with a perfect genome too far despite Susan's protests.
Adele returns having learned about the clones from Siobhan and recruits Felix to go to Switzerland with her to track Neolution companies. Susan awakes on the island, Westmorland needs her scientific mind for Kira's data but Rachel is still in charge of the project. Cosima follows Mud around, eventually seeing the perfect boy is now a feral adult living in the woods.
Credits
Adapted from Wikipedia contributors, List of Orphan Black episodes. HTML formatting and reference markers removed.