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5/5 The struggle at the South Pole continues, but there is only room for one survivor.
4/5 The weather worsens and Bowers goes on the rampage. The others have to run. But where?
3/5 As Bowers' behaviour worsens, Debs discovers why he seems immune to the cold.
2/5 Following gruesome discoveries at both camps, Bowers' behaviour becomes more erratic.
1/5 One man survives a wild Antarctic storm against all odds. What is his chilling secret?