Finally they end up at the home of de Vries (Googie Withers), who at first appearance is a collaborator but is really fighting the Germans behind the scenes. She helps the air crew get a boat and they reach the North Sea and (eventual) safety...
A tense wartime drama, although made for propaganda purposes it is elevated by the shades of grey, realism and an attempt of some humanisation of the enemy. The Germans are still the bad guys but some attempt is made to make them more than cardboard characters. Our heroes are normal chaps who are trying to do their best not chisel jawed super men. A good film though a little slow at times. Notable for being Peter Usinov's film debut, though he is hardly recognisable until he speaks!