‘Freshman’s’ two glider planes crash violently into the Norwegian mountains. It is revealed that their target was Rjukan. Without Erik Henriksen’s approval the Germans heighten security to maximum level at Rjukan. The Americans insists on bombing the factory. Leif Tronstad feels this will be futile and persuades the Allies to send in a team of Norwegians. They will break into the factory and blow it up from inside. He selects five men for this ‘Gunnerside’ mission and now Knut Haukelid is in command. The plan is to join up with ‘Grouse’ who has remained hiding in the mountains. In Germany Werner Heisenberg tries to hoist uranium plates into heavy water. The temperature rises violently and he just manages to escape before the laboratory explodes. Heisenberg argues with his superior that the fire was a breakthrough – but to no avail. Heisenberg has now become obsessed. He delivers a speech where he promises a bomb no larger than a pineapple that will destroy London. At the same time ‘Gunnerside’ takes off from Scotland heading for Norway.