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1. Bölüm Winter has fallen on the South Pole. A small team, known as the Winterers, will remain at the Polaris VI Antarctic Research Station to continue their innovative research, a crucial part in the fight against climate change. After the winter, Johan Berg returns to base, finding most of the team dead or missing. Only Maggie remained at the station.
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2. Bölüm The summer team tries to find clues of what could have happened during the winter, unveiling a first possible suspect.
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3. Bölüm As Maggie begins to recount details of how the members of the team were killed, the search team discovers a frozen hand peeking out from the snow near the base.
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4. Bölüm Arthur reveals that the body found by the team was that of Sarah Jackson's. Meanwhile, Maggie discloses that Sarah's death was not an accident. She was murdered.
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5. Bölüm Jolted by the revelation of Sarah's death, Maggie reveals that the killer was looking for something which Maggie found and kept with her.
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6. Bölüm In the middle of the winter, a small group of scientists in charge of an international base in the Antartica during the long polar nights stops communicating with the outside world.