The Norwegian resistance is tasked with destroying the anti-aircraft defences of the facility immediately before the scheduled attack. When unexpected German reinforcements arrive, Bergman returns to Norway to try to gather more forces. However, he is captured while transporting desperately needed weapons, taken to Gestapo headquarters and tortured for information. Since Bergman knows too much, he must be silenced before he breaks. Grant and newly married Pilot Officer Bissell are sent in with a single Mosquito to bomb the Gestapo building. Though they are successful, their shot-up Mosquito fighter-bomber crashes on its return, and Bissell is wounded and becomes blind. A tearful Hilde thanks Grant for ending her brother's suffering.