A farm girl has a romance with a ski instructor.
Gustl Leubelfing, daughter of the mayor of Nuremberg adores the king of the Swedes. So she happily substitutes her brother as Gustav Adolf's page instead of marrying her fiancée Roland. Of course she has to hide that she's a woman, especially when they go into war against Wallenstein.
The inventor Sir Claude Amery wants to give the thief of the formula for his latest invention the chance to return it in the dark without being recognized. He gathers everyone in the house in the library and has the lights switched off for a short time. When the light comes back on, Amery is dead. A case for the Belgian master detective Hercule Poirot.
