Surprise
Polly and Dennis narrowly avoid being killed by the German plane's bombs. Norman later spies Grainger giving a package to Vivienne Belling. Mary tries to uncover evidence to prove Grainger's a spy. Also, Norman's mother comes to visit him on his birthday. The next day, however, an even bigger surprise awaits the kids in their secret meeting place (the greenhouse at Westbourne Hall).
Other episodes for this season