This is a classic adventure from the undisputed master of action and adrenalin-pumping suspense. When a plane crashes in the icy Greenland desert with no passengers on board, and no means of identification, Joe Martin is hired to fly to the scene of the crash by the insurance company involved and the beautiful widow of the dead pilot. But the routine mission spirals into hair-raising suspense when a priceless batch of emeralds are added to the mystery, and suddenly Joe finds himself in mortal danger.