The survival expert concludes his three-part insight into a remarkable wartime mission in Norway, undertaken during the early 1940s, in which survival skills helped the Allies to stop Hitler's atomic bomb programme in its tracks. Ray hears how the heroes of this daring Second World War raid would like to be remembered.

The survival expert continues a three-part insight into a wartime mission in Norway, undertaken during the early 1940s. Ray visits Scotland and Norway to find out how elite commandos were trained to survive in the wilds so that they could destroy a key part of Hitler's atomic bomb project.

Mears and a team of modern-day winter warfare specialists begin to retrace the epic journey made by the original commandos, who survived appalling hardship to sabotage Hitler's atomic bomb project.