This was a mess. Good acting is overshadowed by a terrible, wandering, disconnected script that leads to a nonsense finale revealing that the answers are in a tunnel that the police have been looking for and is located almost right next to the arctic station where the murders occurred, something that the main characters don't realize while they're learning it, and centers on a group of scientists who we are, depending on the what the plot needs at any given moment, goofballs; ravenous psychotic killers; and helpless fools who only run away and cower. There's a powerful, aggressive, effective advocate for the native people who somehow falls for a buffoon greasy-haired scientist who does nothing but panic, shiver and speak gibberish. There's a symbol that still doesn't seem to symbolize anything, other than the existence of tunnels, even though it's supposed to predate the tunnels. There's a group of women seemingly armed and a dozen strong who choose to attack and murder the scientists but never do any such thing to the management of the mine that is poisoning their people. There's an announcement that the scientists didn't freeze to death followed by the being (somewhat) forced to walk naked out on the ice where they would freeze to death.
The script just wants you to accept a load of disconnected, badly setup, and at times insulting presumptions to get to a story and conclusion that's hard to understand anyway.
Sorry. But I waited for the last episode for this to come together, and it did precisely the opposite. Ugh.