Felt like a somewhat unsatisfying concluding episode. In the end all four "cops" weren't great examples, 2 were outright murderers, (the "Father" cop and the indigenous cop), and the other 2 (foster and the son) part of a cover up of 2 murders.
And then basically, after all the really strong spiritual lore and multiple people seeing long dead people, and hints of something extra-ordinary, turns out a bunch of women just fired the guys out into the snow and they froze to death, so what was all that stuff that was mentioned earlier that the fear on their faces was not something you see when someone dies of cold, that you go unconscious first ?
And having caught the guy in the station, and tied him up etc, Foster just decides to go for a sleep ?
The only twist in the last episode that had some thought into it was that the scientists actively encouraged the company to generate more toxins, as that was accelerating their work progress in getting the DNA or whatever out of the permafrost....that's actually not unbelievable that a solitude group of "nerds" would see the logic in that in isolation.
And, the girl's tongue....that's just left totally unanswered ? The women said they knew nothing about it.