|Image of Krystal taken from: |
When we first actually meet Krystal, Delphine and Dr. Nealon converse about just how naive she is. Dr. Nealon declares her, 'not one to pierce the veil...' But when we meet her with Felix, she clearly has pierced the veil significantly. She's noticed a pattern in her life that is abnormal and she's written about it in a notebook with the Castor symbol on the cover. Of course Felix doesn't recognize it, but we the audience do. In fact, she doesn't begin to spill the beans about her trauma with Castor until Felix asks his suspicious question to try to steal her identity. She's not dumb and is more than capable. And Dr. Nealon certainly knows that if he's been overseeing her monitoring. Felix grasps it a bit, but doesn't realize that she may have caught on to him, Most importantly, Dr. Nealon already convinced Delphine that she's naive so he can execute his and Rachel's plan.
After Felix leaves, Dr. Nealon shows up at her nail salon. Clearly she's never met him, but he has a task for her. Now what did he say to get her to go along with his plan? Presumably he could have offered her answers to all of those questions she seemed to have from her journal (which Felix never really read by the way, it's more than possible that she's not naive at all) as well as a way to get back at those trying to steal her identity. That's plausible motivation. However, I think more has to be at play here. There's no way a Leda clone could just end up with a Castor emblem on her notebook accidentally (and it clearly predates her known encounter with Rudy and Seth). She must have some sort of ties to Castor or perhaps directly or indirectly into Neolution (we know Neolution is still guiding Castor and Leda from a distance). Either of those possibilities would provide stronger reasons for her cooperation with Dr. Nealon.
As an aside, I want to ask about the first time we see Krystal, to her earlier encounter with Castor. Why was her monitor killed? Was it perhaps a ploy to get rid of a monitor that she was having some sort of issues with? Was it helpful for Dr. Nealon and Rachel? Who knows, but it's pretty convenient. Why would Castor try to kidnap her? They needed a fertile clone, which she presumably isn't. And how likely is it that they would actually get stopped? It's too hard to believe. Add to that, when Seth rescues Rudy it almost seems like Rudy knows when to expect him. And Dr. Nealon is the one who finds out that they escaped. Again, how convenient. Did Marion set the whole thing up?
We next see Krystal lying on a hospital bed under sedation in Dyad. When she wakes she acts hysterical (in character) and she wants Delphine to think that Dr. Nealon abducted her and drugged her to take Rachel's place. It's all misdirection and Delphine has no idea. Rachel was long gone and Krystal was in on it. The question, is, when Dr. Nealon shows her Rachel on the screen, does Delphine understand that Krystal was in on the ruse? I think it's more likely than not, Delphine is quite sharp.
I tried to get a sense for who Delphine's shooter was by watching the brief glimpse we get repeatedly. I think it's too hard to tell. The shoes are very loud for men's shoes, but I don't know how much we want to press the details, and some men's shoes can be pretty loud. Obviously it's someone tied to Neolution. The only person we know has ties to anyone in Neolution is Krystal. Yes, she may seem too weak to be a killer, but Helena, Beth, Sarah, and Alison all had it in them (granted Alison's and Sarah's ties to death were not cold blooded). Cosima certainly is fierce and Rachel certainly has no issue with violence even if she would never pull the trigger herself. Why do we dismiss Krystal?
To go back to Shay. It's certainly possible she could be the killer. We know she can handle a gun and Delphine's last words, 'what will happen to her?' mesh nicely with that hypothesis. However, it does not rule out anyone else. Delphine's time of having to love all of the sisters was over since she was no longer in charge of Dyad. She could go back to just loving Cosima. That is the most natural thing for Delphine to ask for her last question. I also want to note that there is no surprise on Delphine's face as she's about to be shot, just disdain. Given that she has just given Shay a vote of confidence, I would expect more surprise from Delphine. Disdain is a very natural response if the killer is Krystal.
I realize this is a speculative argument, but any argument at this point is speculative. But given the evidence we have, I think there's a stronger case to be made for Krystal than for Shay or any other person, for that matter. Her ties to Neolution must run deep. Otherwise it's hard to imagine Dr. Nealon and Rachel betting so much if they didn't know her cooperation was in the bag. I can't wait til next season to find out for sure.