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

Arianna explains what a casbah is, and she and Simone take us around to the Tunisian consulate and the old washhouse.

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.

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."

Luca gathers some more information about the case when he goes to see Laura's mother. Toscani and Marta go to the place where the DVD was thrown away.

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).

We visit the land of the trulli, curious dry stone huts. Alberto Angela gives us some background about these unique dwellings.

Marino meets Silvana and they start chatting by the sea. They discover that their professions are related (naturopathy and body-psychotherapy) and they enjoy sharing ways of looking at emotions and symbols.

Adriano's new idea is to open a factory in the south of Italy, a very poor part of Italy. Convincing his board is a huge challenge. He takes Karen and her camera around the southern part of the country to scout for locations.

Eva goes to see Dante but gets a nasty surprise. But things aren't as they seem, and explanations are forthcoming. Lorenzo, on the other hand, is in a particularly good mood.

The questioning continues at the station house. Manara's co-workers are keeping him up to date, in person. But they get an unexpected visit.

As opposed to the classical palaces of the powerful, with their throne rooms and great halls, Castel del Monte has some smaller and more intimate spaces, conducive to more personal encounters. Over the centuries, the castle was exploited in different ways, well into modern times.

We visit some of the narrow alleys with names that have special significance. Arianna and Simone tell the stories of these names and show us some of the beautiful ceramic pots placed around the town.

After the baptism ceremony in the Palatine Chapel, Adriano takes us to another historically and artistically rich site in Palermo: the Convento di Baida [Baida Abbey]. In Italian, the term convento is used more commonly than monastero [monastery] and may house either male or female religious communities.

Paola makes a quick decision upon meeting Grazia. Karen Bates comes back with some footage for Adriano to look at.