[1] The season takes place in Ennis, Alaska, and follows detectives Liz Danvers and Evangeline Navarro as they investigate the disappearance of eight men who operate the Tsalal Arctic Research Station and vanish without a trace.
In the episode, Danvers and Navarro find a new lead in an icy cave in the outskirts, while Peter faces problems in his life.
According to Nielsen Media Research, the episode was seen by an estimated 0.371 million household viewers and gained a 0.04 ratings share among adults aged 18–49.
Peter (Finn Bennett) is asked by Kayla (Anna Lambe) to leave their house, forcing him to move back with Hank (John Hawkes).
Leah (Isabella Star LaBlanc) and her girlfriend join a rally to protest outside the Silver Sky mining offices, which soon escalates into a riot.
At the station, Peter tells Danvers that he investigated Tuttle United, which is operating alongside Norbank Securities as a founding partner of Silver Sky.
Danvers goes to the Silver Sky headquarters to speak with executive Kate McKitterick (Dervla Kirwan), who is talking with Connelly (Christopher Eccleston).
Danvers accuses Silver Sky of their involvement, prompting Connelly to warn her that the case is closed, revealing that he knows the truth about their encounter with William Wheeler.
Kenny found a rock with the spiral symbol and was warned by his grandparents to stay away from the caves, as they would go to the "night country".
With help from Rose (Fiona Shaw), Navarro shatters the ice to scatter Julia's ashes into the sea as a storm approaches.
Deducing that Hank gained access to his laptop, Peter questions Danvers about her role in Wheeler's death, having concluded that evidence was forged in the victims' files.
Danvers takes Otis to her house, bribing him with heroin in exchange for the location of the best alternate point to enter the caves.
Hank admits he moved Annie’s body after she died in the cave and aims his gun at Danvers, prompting Peter to kill him.
Believing Connelly to be corrupt, and fearing for Peter's safety, Navarro refuses to get him involved, and prepares to stage the scene as an accidental death.
Originally, as Hawkes described, "it's just a guy sitting around playing the guitar, and it will end up, as the script described, scoring some work between Danvers and Navarro and the mine riot."
He expressed that in contrast to the lengthy ruminative moments of episodes past, Part 5 brings back the "excitement of the premiere…because there are finally some answers to the questions that have been teased out for so long.
"[10] Coleman Spilde of The Daily Beast wrote, "We won't have a sense of whether showrunner-writer-director Issa López was panicking to tie up loose ends with only one episode of the season left, or if this barrage of intersecting plotlines is part of her grand scheme, until next week.