This was actually the very first Alistair MacLean book I read as a child, and I read it many time since. In my opinion it is one of his best. With all the usual thrills and spills, this one adds chills galore too; it does a great job of imparting a sense of cold and dark. Set on the frozen Greenland icecap, an airliner mysteriously crashes near a IGY (International Geological Year) research station. The scientists manning the station rescue the survivors and then the plot thickens... It turns out the crash was somehow arranged so that certain passengers could get a certain piece of equipment from the plane to an anonymous fishing vessel hidden among the coastal ice floes, and will stop at nothing to achieve their goals. Of course, the safety of the free world is at stake, and it seems a few unprepared scientists and assorted airline crew and passengers are the last line of defence for mankind. As with most of Alistair MacLean's books the timing is superb, the suspense ever-mounting, and the climax is perfect.