Alberto Angela talks about how Mont Blanc was formed over millennia, and concludes this episode with a breathtaking view, as well as some lines from a poem by Shelley. Here is the original English:
Far, far above, piercing the infinite sky,
Mont Blanc appears,—still, snowy, and serene—
In the calm darkness of the moonless nights,
In the lone glare of day, the snows descend
Upon that Mountain;
[Nor when] the flakes burn in the sinking sun,
[Or] the star-beams dart through them:—Winds contend
Silently there, and heap the snow with breath
Rapid and strong, but silently! Its home

Gaetano and Camilla finally meet. They talk about the case but not only, and they go to Luca's house to talk to his parents.

Nora confronts Ugo about what Rebecca told her. Nora and Spartacus try to come up with solutions for the zero-impact wedding. Bruna comes to work very upset.

Grandpa Libero's bad day just got worse and he is almost at the end of his rope, overwhelmed with responsibility. Maria realizes she has to do more to help out in the family.

Dafne doesn't mince words in criticizing her father, but she is there for him, a sort of anchor. It gets late and they need food and lodging.

Marika takes us to see a special statue, a fish market and two famous bridges.

One reason people would climb Mont Blanc was to find quartz. Alberto Angela explains why there is so much of this precious gemstone here.

Gaetano gets a different story from the doorman than his wife had given, and even has some new important details to share. Gaetano reports on the case to the prosecutor and brings up dinner again. At home, Camilla mentions the substitute dance teacher to Renzo...

Ugo guesses what Nora is up to, but of course she denies it. Later, she and Rebecca meet up for some wedding business and end up talking about personal things.

Alberto and his grandfather have a heart-to-heart talk about what has transpired. The conversation turns to Ciccio, who hasn't come home yet.

Little by little, as they walk and talk, Dafne and her father make discoveries about each other, even deeply personal ones.

We move to the French side of Mont Blanc, which has a much milder slope than the Italian side. Mont Blanc stands out as having had an important role in the development of mountain-climbing as a competitive sport.

Rotunno's wife had heard the news report in the bathroom of the airport, so she made a change of plans in a hurry. At home, Livietta and her mother are having a chat about school, while Camilla's phone keeps ringing and ringing in the living room.

Nora decides to organize Rebecca's wedding without Ugo's help. She prepares for battle and embraces the bride-to-be's wish to have an impact-zero wedding dress.

Cettina helps Guido get his room in order, and discovers that an assumption she had made about him was false. Grandpa Libero has to go and confront Alberto about his absence from the university.