6. The Scandal of Altruism

Complete story — includes the ending

In a flashback, Beth wearing a blonde wig enters a private Brightborn event with Susan and Evie in attendance. When Susan leaves the room, Beth follows and holds a gun to her head, threatening to kill her. Susan argues that as the leader of Neolution, she is also protecting them and that she genuinely loves the clones. Beth leaves without shooting. In the present, Krystal turns up at the police station seeking protection from the guys who look like Castors. Art spots Krystal and arranges for her to meet Felix. Krystal reveals that she saw Delphine get shot. Evie confirms that Sarah's bot is attempting to isolate the gene making them sick by activating specific genes in Sarah. Running out of time, Sarah and Cosima take up Susan's request to share Kendall's genome, without consulting Mrs. S. Refusing to share the Castor pathogen when sharing Kendall's genome, Cosima suggests isolating the Leda cell line, using Kendall's cancer cells which have multiplied from a single Leda gene and thus have not impacted the Castor gene line. After Evie and Cosima remove Sarah's bot, she returns home to find Kendall's cigarettes in a pool of blood, and that Kendall cannot be contacted. Sarah destroys the samples and they take Susan hostage, believing she orchestrated Kendall's abduction; in turn, Cosima is taken hostage at Brightborn. Sarah believes Ira is behind the attack after denying him a cure but he is found unconscious after attempting suicide by drug overdose. Brightborn wipes Scott and Cosima's research and they realize that Evie is behind the attack, wanting Leda destroyed. Duko prepares to burn Kendall to death and destroy Leda's hope for a cure, as instructed by Evie. Evie grants Cosima permission to say goodbye before Kendall is murdered. Evie tells Cosima that Delphine was shot dead, before instructing her to tell Susan that the original is dead and to tell Sarah that it is over or Beth died for nothing. A flashback reveals that Evie misled Beth to kill Susan and, Beth having not followed through, Evie threatened Beth by saying that she knows too much and should use the gun on herself to save her sisters. Beth, after physically attacking Evie, is shown walking to the train platform after saying goodbye to M.K.