Spoilers for this episode.
Inside the Cradle, Ford explains that Delos has been recording guests to reproduce human minds. He also describes Dolores's role in refining Bernard from her memories of Arnold. Ford's own mind survived inside the simulation, but he now transfers into Bernard and begins overriding his choices. Bernard leaves the Cradle with Ford's presence still directing him, while Elsie believes they have cleared the obstruction in the park's systems.
Dolores and her followers storm the Mesa after the train attack. Angela reaches the Cradle and detonates a grenade, destroying the hosts' stored backups along with herself. Dolores finds Peter in Charlotte's custody and learns that his data contains an encryption key. Teddy kills Coughlin during the fighting. Peter briefly recognizes his daughter and says goodbye; Dolores removes his control unit, taking the key while giving up his damaged body.
At the homestead, Maeve confronts William and turns his companions against him. She restores Lawrence's memories of William's cruelty, prompting him to shoot William. Delos soldiers summoned by Lee kill Lawrence and wound Maeve, whom Lee persuades them to bring back alive. Akecheta takes her daughter away. At the Mesa, Maeve rejects Dolores's offer to end her suffering. In the later recovery timeline, Charlotte and Strand discover Bernard's host identity and question him. His fractured recollections lead them toward Peter's control unit in the Valley Beyond.