Continuity mistake: In the danish version of the book, when Norah is examining the water sample from the hole in the ice, she concludes that it is a 3% saline solution, and shortly after, they're talking about it being a 4% solution.
Factual error: The author says that Rachel and Michael (as well as Corky) are rescued by a Coast Guard MV-22 Osprey. The Coast Guard does not fly Ospreys.
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