We look at Leonardo's Last Supper from close up — the details, the symbolism — but also from the refectory floor, seeing how Leonardo's genius made the fresco part of the room itself.

This fascinating segment is all about salt: Our spice journey takes us to Sicily, where much of Italy's salt is harvested. Franco talks about how salt is life, salt is gold.

Listen carefully to this lesson because the rules for these indefinite adjectives are a little quirky. These are about totality — all or nothing — and work differently from English, especially when they're in the negative. We're talking about tutto, nessuno, and alcuno.

The investigation begins. Manara and Rivera go to see the victim's wife, while Toscani calls a tow truck. Then all hell breaks loose in a house nearby, where there's been a gas leak.

Having spent the night at the farm, Guia wakes up to several surprises. She has trouble putting her thoughts into words.

Gaetano is pretty sure Camilla knows more than she lets on, and gently gives her a warning. But she can't help herself, and travels once again to Mazzeo's aunt's house.

In this lesson, Daniela discusses indefinite adjectives that refer to units or multiples. We're talking about adjectives such as "each," every," and "certain." Some have variable endings and others do not.

The exasperated lawyer comes up with a plan for the dog who happens to be named Uno (one). As they are taking care of this, they each get a phone call and have to hurry off.

The word cosa (thing) in Italian is an extremely useful word, especially when you don't know the real word for something. Marika tells us about how it's used in Italian everyday conversation.

The autopsy report comes, and Manara goes to talk to the victim's widow. Marta goes to talk to his lover. Marta gets a phone call, and her colleagues realize, with surprise, who her father is.

Pino is very active in the church, it seems, and helping out at the funeral is no exception, as far as he is concerned.

Kids have livelier imaginations than adults sometimes, and in fact, Livietta can see something in Mazzeo's aunt's drawing that Camilla totally misses.

Two geniuses left their indelible marks on civilization: Leonardo with the Last Supper and Michelangelo with his David.

Franco shows us some infused salts that we would never think of off hand. His descriptions are colorful and make us want to try out these delicacies.

Here are three more indefinite adjectives. The third one altro (another, next, last, different) is very common and can mean several things, so context is key.