Triumphantly returning from the North Pole on May 24, 1928, the world-famous exploring airship Italia—code-named N-4—was struck by a terrible storm and crashed somewhere over the Arctic ice, triggering the largest polar rescue mission in history. Helping lead the search was Roald Amundsen, the poles’ greatest explorer, who himself soon went missing in the frozen wastes. Amundsen’s body has never been found, the last victim of one of the Arctic’s most enduring mysteries. Braiding together the gripping accounts of the survivors and their heroic rescuers, N-4 Down tells the unforgettable true story of what happened when the glamour and restless daring of the zeppelin age collided with the harsh reality of earth’s extremes.