Antonino has a visitor from Sorrento on the Amalfi Coast, who brings in some of the world-famous Sorrento lemons. They prepare whole-wheat spaghetti with a simple sauce featuring lemon rind and bottarga (salted fish roe).

It's time for the girls to act. They carry out their various tasks and manage to get into Negri's studio. Eva makes a beeline for the safe. Eva is disguised, and is described by her friend as the Befana. Befana is a corruption of Epifania (Epiphany) and, in Italian tradition, the Befana is an old woman who brings gifts (or coal) for children on this holiday. Befana has also come to mean "witch."

Adriano imagines his new factory and describes the layout to Karen. The workers in Dalmasso's factory are not happy about their working conditions and Mauro manages to placate them. Dalmasso notices his skill in dealing with people and has a new idea of a job for him.

Alberto Angelo tells us the fascinating story of how trulli are built. Some of the most characteristic trulli can be found in Alberobello.

Eva's expertise shines through as the situation at Negri's studio takes an unexpected turn. Lola also plays an essential role in the success of the heist.

Adriano's son Roberto has an idea he wants to develop, but Adriano is skeptical, at least at first. But Roberto knows how to tempt his father with good cocoa and this leads to an important meeting. While they are out, they discover that Mauro Barale is running for office.

After Philip's baptism, there is a banquet with typical Sicilian food, and favors for the guests. And there also happens to be a stunning view of Palermo from the convent or monastery hosting the party.

We are now in the heart of Italy: Tuscany. One of the most beautiful and important cities in Tuscany is Siena with its very particular piazza.

Negri isn't happy to find out his money is gone, and blames it on his usual cleaners when they show up at the studio, late for work. Eva and her friends have a nice surprise for Filippo and his father, who is incredulous.

Karen's report to her superiors about Olivetti's plans prompts some serious spying on his operation by the U.S. Mario Tchou explains his ideas to the new team of young engineers.

Alberto Angela brings medieval Siena to life, with the help of some breathtaking aerial shots.

There's some tension between Dante and Eva but they get distracted by Lorenzo who shows up at the restaurant in high spirits. The chief of police, also in high spirits, stops by to report on having caught a corrupt contractor.

Adriano goes to Rome to try and get financing for his project. He is unpleasantly surprised to have to deal with someone he knows very well and with whom he had had a falling out.

This song, written by Ivano Fossati and sung by Loredana Bertè with her scratchy voice, has never lost its popularity with Italians.

The Siena Cathedral is one of the most notable examples of Italian Romanesque-Gothic cathedrals, and is well worth a visit, for both the beauty of the exterior and the unique marble artwork on the interior.