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Midwinter in Antarctica. Six months of darkness are about to begin. Scientist Katie Flanagan has an undeserved reputation as a trouble-maker and her career has foundered. When an accident creates an opening on a remote Antarctic research base she seizes it, flying in on the last plane before the subzero temperatures make it impossible to leave. Meanwhile patent lawyer Daniel Marchmont has been asked to undertake due diligence on a breakthrough cancer cure. But the key scientist is strangely elusive and Daniel uncovers a dark secret that leads to Antarctica. Out on the ice a storm is gathering. As the crew lock down the station they discover a body and realise that they are trapped with a killer...