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.
According to Nielsen Media Research, the episode was seen by an estimated 0.983 million household viewers and gained a 0.19 ratings share among adults aged 18–49.
He finally confesses that Annie discovered their plan to find the DNA of an extinct micro-organism that could stop cellular deterioration and provide a cure for many diseases, which had been frozen in the permafrost, which was softened thanks to the pollution caused by Silver Sky.
By faking the toxicity records, they found the microorganism and hoped the pollution would continue to make their job easier.
When Leah (Isabella Star LaBlanc) arrives, he asks her to be with Kayla (Anna Lambe) so she does not spend New Year's Eve alone, and drives her back.
Clark then claims that Annie came back to life to kill the scientists, prompting him to hide in the passageway for several weeks.
The women reveal that they discovered the hatch and underground laboratory while cleaning, and they did not tell the police because they believed nothing would change.
The employees decided to take the scientists by gunpoint and forced them to go out into the outskirts naked, believing that Annie took care of them.
They claim this is just "another story", and Danvers and Navarro decide to officially deem the Tsalal men's death an accident, closing the case.
The site's consensus states: "True Detective: Night Country's finale ends the season in satisfying fashion, albeit on a note that may frustrate viewers annoyed by ambiguity.
However, with the final edition of her Night Country saga, López has honored her vision while still making this chapter feel very much a part of the greater True Detective universe.
"[9] Alan Sepinwall of Rolling Stone wrote, "There will almost certainly be another story, whether López tells it, or Pizzolatto returns, or someone new ends up in charge.
"[10] Ben Travers of IndieWire gave the episode a "B+" grade and wrote, "After five years off the air and with a new creative team in place, True Detective Season 4 set out to continue the franchise while reimagining what it could be.
"[11] Coleman Spilde of The Daily Beast wrote, "It was not a perfect season, but its place in the series makes it a fascinating study for fans to continue pondering long after its end.
"[12] Amanda Whiting of Vulture gave the episode a perfect 5 star rating out of 5 and wrote, "In the end, how gratifying you find the finale will depend on your willingness to forgo objective truth in favor of a notion more slippery and less satisfying.
"[13] Scott Tobias of The New York Times wrote, "Even after tying up all the loose ends, López holds onto the idea of Ennis as a place where ghosts commune with the living, whether through fevered hallucinations or lingering guilt that flourishes in the dark like a mushroom.
Tyler Johnson of TV Fanatic gave the episode a 2.5 star rating out of 5 and wrote, "The show deserves to be lauded for its performances and the memorable visuals it mined from the frigid darkness, but its conclusion was as frustrating as an abandoned cold case.
If Night Country had just been allowed to be its own thing, without any pressure to either live up to season one or abide by its Weird parameters, it probably would have been a much better show.
The site wrote, "Foster has been a marvel all season long on HBO’s chilly crime drama, with the two-time Oscar winner crafting an unforgettable portrait of a woman who's much better at hunting for clues than connecting with other human beings.