The Republic of Siena ends in the 16th century and power goes to Florence, where we go next, to see some of the architectural wonders there.

Bettina gives Camilla something fresh to put on and gets the book Camilla came for. Small talk between Gaetano and Camilla leads to some interesting hypotheses about the case he is working on.

The girls are in high gear. They do what they have to do, and they also manage, in a flash, to prepare a nice, rosy welcome for Armando.

Franco is crazy about spices. He draws us into his world, the world of the 7 (not just 5) senses. In his stream of consciousness style, he prepares us for traveling the four corners of the earth to discover all the tastes and fragrances awaiting us.

After conceding their little bet, Camilla involves her daughter in a "phony" phone call. There's an incident at Bettina's gallery, where Camilla has gone to pick up a book.

Eva's friends see what an expert she is in certain matters and express their curiosity. But they have work to do and there's no time to waste.

Franco Calafatti shows us his marvelous shop filled with spices. He brings us into his world, his special relationship with the spices, from traveling the world in search of the plants, to the harvesting, to the sorting, to the crushing.

Vanda has a hard time accepting what seems obvious to Camilla. Meanwhile she gets a reality check in the form of a phone call. She's lucky to have Camilla as a friend.

It's time for the famous dinner with Franco's parents and everyone's a bit nervous, understandably. Eva's advice to Franco is put to the test.

Alberto Angela shows us a volume from 1554 that bears witness to one of the most dramatic moments in Sienese history. We then go on to the beautiful city of Pienza.

If the name Olivetti is still known today, it's because Adriano Olivetti made an important contribution to the industry of electronics, but also to the ethics of industry in general.

Camilla really is a good friend to Vanda. Vanda, on the other hand, is a bit naive. They have a heart-to-heart talk.

Franco and Lola try to practice their lines for the dinner with his parents, but it's tough. Gina has some news for Eva.

Arianna finally finishes making panzanella [Tuscan bread salad], which she then enjoys eating while sitting outside under the Tuscan sun.

Adriano is on his way to Switzerland. Before he gets on the train, he exchanges a solemn few words with someone who used to be a friend.