An intriguing first episode (though with a number of familiar story elements). Some have mentioned a kind of X-Files vibe.
I was curious about the word “tsalal” — the name of the arctic research station. Apparently, it’s ancient Hebrew for “to be, or become, or grow dark.” And among the first to use the word in a popular context was EA Poe in his novel The Narrative of Arthur Gordon Pym of Nantucket. This novel, in turn, was inspiration for Lovecraft’s At the Mountains of Madness.
I suppose the supernatural might be part of the narrative. Or, what appears to be “supernatural” might turn out to be personal visions/madness brought about by…? We shall see.