When Cosima finds a cure for the clone illness, Susan locks her out of further research, and is then herself betrayed by Rachel.
This episode contains examples of:
- Cassandra Truth: Krystal's reaction when Felix tells her that she and Sarah are clones is, "That's what you think I look like?"
- Cliffhanger: To end the season, as is par for the course with this show. Cosima has smuggled the cure to Delphine, but the camp where they are is supposedly a very dangerous place for her to be; Sarah is stranded on the island with a stab wound in her leg; Ferdinand is holding Kira and Mrs. S hostage; and Rachel is about to meet the founder of Neolution.
- Entertainingly Wrong: Krystal's explanation for everything, involving Neolution as a Swedish cosmetics company.
- Gambit Pileup: Susan wants to restart Leda. Rachel wants to take over the project and merge it with Evie's cheekbots. Sarah wants to get the cure off the island. Ferdinand wants to get in Rachel's pants.
- Harmful to Minors: Charlotte and Cosima watch Rachel stab Susan with a kitchen knife. Cosima tries to cover Charlotte's eyes when she realizes what's happening.
- Hoist by Her Own Petard: Van Lier kills Evie with one of her own cheekbots.
- I Have Your Wife: The end-of-season cliffhanger includes Ferdinand holding Kira and Mrs. S at gunpoint.
- Pet the Dog: Despite being jealous of his upbringing, during her coup Rachel never harms Ira, who - as a Castor clone raised by Susan - is her brother twice over.
- Series Continuity Error: Krystal's flashback of Delphine's shooting shows her using the same blue phone that Felix gives her after said shooting.
- The Man Behind the Man: P. T. Westmoreland is apparently the man behind literally everything.
- The Reveal:
- P. T. Westmoreland, the Victorian founder of Neolutionism, is still alive and running the conspiracy. He also designed Rachel's eye, which is why she's been having visions.
- Duko shot Delphine.
- Sexiness Score: Krystal is disappointed when she meets her clone Sarah, because Sarah is a "7" while she's a "10".Krystal: Okay, are you, like, blind? 'Cause This girl looks nothing like me. Like, first of all, my tits are way bigger. And secondly, even if you could drag a comb through that hair, she's like a seven on a good day and I've been told I'm a ten.
Sarah: A seven?
Felix: She has a point about your hair.
