Imma buys a dress to replace the one with a stain. Calogiuri has some new information about the victim. Meanwhile, the chief prosecutor gets a disturbing email.

Dafne's father prowls around the house at night with a flashlight. She doesn't get it. She likes running water, which he doesn't get. They are each trying to deal with their grief.

The Castle of Roccascalegna stands on a high, rocky bluff dominating the valley of Rio Secco in the province of Chieti. Breathtaking drone footage allows us a bird's eye view of this fascinating construction, begun by the Lombards as a watchtower.

At the police station, there seems to be a match for the murderer. In class, Camilla does the roll call and discovers Luca Foglietti is absent once again. She goes to the window to investigate.

In the end, Lorenzo and Maya's wedding was a success for everyone except Gisela. Back home, Ugo and Nora discuss the day without arguing too much, which is also a huge success.

Grandpa Libero is having a rough day with his family. Ciccio is zoned out playing video games. Alberto comes home talking about his exam, and Maria comes home without Annuccia.

In Paris, Mimmo and Franca are having a rough time getting by. But that doesn't stop Mimmo from wanting to have a good time. They don't agree on the right path to take.

Tataranni and Calogiuri talk to the owners of the dairy farm where the victim's limb had been found. On the way back, Calogiuri gets a good idea.

Dafne is at a party with her friend Viola, and a guy asks her to dance.

The Great Cave of the Wind in Frasassi is a natural wonder, but it also bears witness to the passing of time. Speologists are still exploring it and discovering new wonders.

The witnesses questioned by Torre furnished some important information about the murder. Gaetano meets the new public prosecutor who is not what he expected. Renzo makes the acquaintance of Livietta's substitute ballet instructor.

Lorenzo wants to leave, but Nora and Ugo talk to him about love. Gisela is waiting for the police, who aren't showing up. Meanwhile, Maya has a surprise for everyone.

Grandpa Libero goes over to the university with Fausto, looking for Alberto. Maria doesn't show up at school to pick up Annuccia, and so Annuccia starts walking home by herself. Nowadays kids would never be allowed to leave school unattended.

Mimmo begins telling about his honeymoon, which was very short and simple and included his friends Riccardo and Rosi. A flashback takes us to the Modugno living room in Rome, where they all watch a little black and white TV where the famous presenter Mike Bongiorno is hosting a game show. Conversation turns to work and they talk about the future.

Imma chases down her mother who is very mixed up about where she lives. She goes to the morgue to talk to the coroner about the new body part that was found.

Dafne takes her lunch break with her new co-worker Camilla and learns a little more about her. At the hairdresser, Dafne gets a phone call from Viola.

We spend some more time in the spectacular Frasassi Caves, and this time we see the famous "Room of the Candles" filled with stalagmites that look like candles ready to be lit. Alberto Angela also discusses the colors in this place, as well as the "sounds of silence."

Gaetano is at the crime scene and two young witnesses work with a sketch artist to recreate the suspect's face. Just as we suspected, there was indeed a problem with taking Camilla's VW to drive Renzo and Livietta to their appointments. We discover who the new principal of the school is. Camilla's class is having fun as they wait for her to show up (late).

Maya's family provides some lively music, but there is plenty of tension, and Lorenzo's mother jumps to conclusions when her necklace goes missing. Maya is heartbroken and almost ready to give up and go home.

Guido goes to see an old widow, who isn't a willing patient. Maria shows up at the Health Center as planned.

Mimmo is describing the moment in which he and Franca take their relationship to another level and when he also finds the rhyme he'd been looking for in the song he'd been writing. Later, during the recording session of Vecchio frac, he finds out the censors have been at work and want him to change the lyrics.

Imma is finally home, ready to have something to eat and discusses this on the phone with her husband. But then he urges her to turn on the local news station, quick.

Dafne and her father are starting to settle in at home. He did some grocery shopping and is fixing dinner. She told him about her day at work.

Alberto Angela tells us how these caves and their internal structures were created. The key is something very simple. Water.