A very interesting tale of a German mission to destroy the Magna Carta provides exciting airborne action during WWI. A German-born British flier is emotionally torn by duty and homeland. The special effects are better than average and responsible for the films atmosphere. The story line leaves too many questions. This melodrama was filmed in Scotland. The notable cast includes: Michael York, the fascinating Elke Sommer, Andrew Keir and Peter Casten. Neutrality sometimes walks a tightrope.