10. From Dancing Mice to Psychopaths

Complete story — includes the ending

What happened to Delphine is revealed. Helena keeps Donnie and Alison safe. After Cosima finds a cure for the Leda clones, Susan cuts off her network access and later locks her in a room. Susan tells Rachel that they can continue the cloning program. Krystal sees Dr. Van Lier's (doctor and mentor to Evie) familiar face on a news clip about Brightborn, and offers information on Delphine's shooting in exchange for information and insight into the investigation. Krystal meets one of her clones for the first time, but doubts their resemblance. Sarah publicly poses as Krystal to get information from Van Lier on the Island's location and Rachel's plan, which involves taking control of Neolution, merging now-deceased-Evie's bots with cloning technology. Rachel does not want her mother Susan back on top. Rachel casts aside Ira, then Sarah convinces him to help prevent Rachel from harming Susan. Sarah flies to the Island to save Cosima, whom Charlotte has released saying that Susan wants them to escape by boat before angry Rachel finds them. Susan tells Rachel that in contrast to her sisters, Rachel's existence is a regret. Sarah arrives to find the bleeding Susan, who says Rachel took the stem cells and the Leda cure. Rachel attacks Sarah. Susan tells Rachel who created the prosthetic eye that has given her visions. The man from Rachel's visions leads Cosima and Charlotte to Delphine at a camp on the Island. As Cosima takes a turn for the worse, she tells Delphine that she "finished (our) homework", ie. the cure. Sarah lies bleeding on the beach and learns that Kira and Mrs. S are being held captive by Ferdinand, who has defected to Neolution under Rachel's authority. In the final moments, Rachel gleefully prepares to meet P.T. Westmorland who founded Neolutionism centuries ago, still alive today.