We discover an amazing spot in the Italian Alps that overlooks the Chisone valley: an eighteenth-century fortified boundary wall, one of the longest in the world.

Renzo wants Camilla to go to a book presentation with him, but she is not so sure. She totally forgets her appointment with the neighbor boy, but he doesn't. She helps him with his Latin, but tries to draw him out, too.

Brigadiere, Aunt Caterina's dog, gives Luca an idea regarding the investigation and he and Lara are off. Speaking of animals, in his phone call with Toscani, Luca uses an idiomatic expression featuring an animal. Get some insight about it in this lesson.

Dante and Eva are still not talking to each other. Lorenzo and Dante are talking, but not really listening to each other. Andreina and Eva witness something interesting at the pharmacy.

The Grinzane Castle houses a Museum of Peasant Civilization. Alberto Angela shows us a huge wine press and explains how it worked.

Camilla goes to the police station to report the theft of her handbag. Livietta confesses to why her retainer is hurting her.

Ginevra is tuned in to Luca's mood and they talk about what might be causing it. His mood doesn't keep him from figuring out some new details about the case, however. Some viewers will catch him as, in a moment of humility, he makes a fleeting reference to another police chief in a very successful TV series.

This segment is about how the famous wine Barolo came into being. It all started in the Grinzane Castle in the mid-1800s.

Eva finally opens the famous letter, which changes her mood. She has a lively conversation with her son. The next day she goes to the market and her mood changes once again.

Camilla has some car trouble, which leads to a conversation with a neighbor. She is also late for school, putting her in a bad mood.

Nora and Ugo succeeded in planning a perfect wedding for Francesco and Matisse. They seem to be a great team even when they work separately.

Manara has an unusual conversation with his boss, Lara has a phone conversation with her aunt, and Luca and Ada have a conversation about relationships.

Fai rumore (you make noise) was written and performed by Italian singer-songwriter Diodato. He's trying to make some sense out of his life.

Alba spills her story to the girls. Naturally, they want to help her. Eva has a letter from Dante she is afraid to open.

We go to the northern part of Italy: Piedmont, and here, in the southern part of the region, called le Langhe, what's worthy of being a World Heritage Site is about the land itself and what it produces, rather than about art and architecture.