The story of R J Mitchell and his team, who developed the Spitfire just in time to defeat the Nazi attacks during the Battle of Britain, despite Mitchell's rapid deterioration due to the cancer that killed him.
The story of the men that cracked the Nazi's Enigma code. From the Polish mathematicians who made the first breakthroughs to the establishment at Bletchley Park and the work of Alan Turing and many others.
The story of the blitz on Britain and how the Nazi bombers were guided to their targets by electronic beams. Then how this was defeated in The Battle of the Beams by Dr R V Jones and the team from British Air Intelligence.