"Phase Space" is the sixth episode in the second season of the HBO science fiction western thriller television series Westworld.
They set the train loaded with explosives at full speed, planning to crash into the Mesa's entry terminal.
Bernard and Elsie make their way back to the Mesa, and discover that the Cradle, the central repository of host data, has hijacked the park's systems, and that they must go there to find the source.
"Phase Space" was watched by 1.11 million viewers on its initial viewing, and received a 0.4 18–49 rating, marking a series low in viewership.
The site's critical consensus reads: "'Phase Space' shocks with a surprising character return and a gratifying answer to one of Westworld's biggest riddles, leading to further gripping questions.