Plot summary
Krystal and her roommate Brie stumble into a current Dyad scheme involving cosmetics and the plan for Kira. Sarah and Art are forced to watch as Krystal takes charge in the hunt for answers. It turns out Neolution wants to spread Kira's genes to people through dermatology products. Rachel is temporarily fooled into letting Kira stay home but takes her from Siobhan after a call from Westmorland. Siobhan warns Rachel that she will need help one day. Meanwhile on the island, Dr. Coady returns much to Susan's chagrin and once Susan learns Westmorland is taking children's blood to extend his own life she prepares to kill him.
Cosima and Ira persuade Mud to help them kill Westmorland, but she backs out. Cosima and Charlotte sail away after Cosima shows the Revival villagers Westmorland's immortality is a lie, and they riot. Ira finds Susan dead in the mansion as his glitching goes critical, Ira's fate is unclear.
Credits
Adapted from Wikipedia contributors, List of Orphan Black episodes. HTML formatting and reference markers removed.