If ever there was a doubt that Hap is horrible person, for me this episode absolutely cements this. It's not that he does anything that he hasn't done before, it's just the absolute self involved nature of his thoughts. Sure, it's supposedly about the work but when Prairie finally calls Hap it, it becomes clear what Hap really is.
Everyone gathers at the abandoned house to listen to Prairie tell her story once again. She explains that there are actually several dimensions and that each decision creates a fork in the path and opens yet another dimension. It's the hope of the captives that when they collect all five movements that they will be able to leave their captivity behind and start over in another dimension. Of course, the listeners want to know what it looks like when a new dimension is accessed but Prairie can only speculate because she's never actually seen it happen; she's working entirely on faith. At this point, Prairie's little crew is all in and no one actually calls her out on this which personally, I find absolutely stunning.
In captivity, they practice each new movement, now fully committed after seeing Scott return from the dead and be completely healed. In time, during one of her NDE's (near death experiences) Renata is gifted with the fourth movement. They spend their time between being experimented on, perfecting the movements hoping for the ability to memorize them. In fear of forgetting the movements, they carve symbols onto their backs so that the scars will be a permanent reminder. Yes, those symbols are actually self inflicted.
Hap watches everything his captives do on CCTV. He has become a participant in their work, learning each new movement as his captives do. Prairie and the crew are desperate to receive the fifth movement but even more desperate to keep it from Hap. Hap watches them jealously, all too aware of just how on the outside he is. His captives have formed a family and he is certainly not welcome.
Hap does have one person to share his secrets with though - a mentor. Yes, let that sink in for a moment, there are actually two monsters. They have been working separately with their own test subjects, hoping to come to the same conclusions and to spur each other's work along. They meet up at an abandoned morgue in a hospital to have lunch and share their results as though they aren't both responsible for kidnapping and multiple murders. As they make sandwiches and talk about their subjects, it all seems so very normal for them.
Dr. Citro is far more detached that Hap is and he's not the least bit concerned that he's an outsider and is in fact happy to be in the one in the position to torture. Hap however feels jealous of the closeness of his captives and he talks about how they are sharing movements with each other. Dr. Citro's only goal is to be able to prove that there is life after death and then sit back and rake in the money for being first to publish. Hap however is in it for the science and not the accolades or the potential wealth. I cannot believe I am saying this but Hap, for all of his disgusting ways is a purist. When Hap mentions the forks in the road, Citro gets curious but Hap is not forthcoming.
Citro takes another tact and tells Hap that he has a surprise for him on one of the embalming trays in the fridge. Of course, when Hap opens it up, it's empty. Hap stands to find Citro pointing a gun at him. Hap is actually shocked by this and doesn't think that Citro is going to kill him. Can Hap really be this dense? Citro admitted to regularly cycling out his subjects and cremating them to avoid attachments and somehow Hap thinks a man like this wouldn't kill him? When Hap again refuses to be more forthcoming, Citro fires his gun, forcing Hap to fight for his life, Hap ends up drowning Citro in the embalming fluid before sneaking out of the hospital with a scarf wrapped around his mouth to hide his identity. Hap does however stop on his way out to give the key to the morgue to a nurse and to ask her to call the cops because there are people there who need help.
Hap is now a monster working alone. Unsure of what to do, Hap takes Prairie out of her cell. After being forced to drown so many times, a defiant Prairie puts the lubricant on her head herself and does up her own straps. Hap asks Praire to go away with him, saying that they can go to an island and heal the sick and then use the money to fund more research. Prairie asks about the others and Hap promises to work it out. Prairie doesn't even consider Hap's offer to take her anywhere she wants to go for a New York minute and defiantly declares that she will go nowhere with Hap.
All out of luck, Hap begins the experiment and as the tube fills with water, cutting off Prairie's oxygen, she stares coldly at Hap. Prairie manages to maintain her death glare before the trauma of being drowned finally forces her to fight back. Of course, Prairie dies in the machine. When Prairie heads to the other side she calls out to Khatun but this time, the angel does not appear and does not answer Prairie's calls. When Prairie returns to her body, once again, Hap is filled with questions but this time she clearly doesn't have the patience to answer them. Hap plays different sounds for Prairie, trying to identify where Prairie went on her NED. It's not until Hap plays a sound from the rings of Saturn that Prairie recognises it as what she heard during her NED. An excited Hap wants to talk about this latest discovery but Prairie cuts him off by pointing out that they aren't friends or family and that she is little more than his slave. Prairie points out that Hap wants all of the answers from his captives but doesn't have the courage to get in his own damn machine and die for the answers he wants, they way he expects others to.