An agreement has been signed between Enel (Italia's leading electric company) and Piaggio (a leading motorized vehicle manufacturer) for the development of electric mass transportation and for studying innovative solutions for the safeguarding of the environment.

Commisioner Manara and Lara continue their investigation, interviewing Dr. Di Censi, whose answers enable them to make an important connection with a note they'd found of the late Professor Lenni's. They go to Dr. Masini's office and find him just about to leave.

Terre d'acqua means water-lands. We are talking about the once marshy area which has now become the fertile Po valley. Gualtiero Marchesi is considered to be the founder of the new Italian cuisine, and is perhaps the best known Italian chef in the world. He begins telling us his story.

The Naples soccer team is the most popular team in Southern Italy, having won a very high number of games. They have an estimated four million fans worldwide, many of whom come to this shop to buy jerseys.

It turns out Lenni's will contains some surprises. Someone important is excluded completely and another person, quite unexpectedly, is included. Meanwhile, Caterina is puzzled by Doctor Masini's behaviour the day of Lenni's death.

Learn Italian and how to tango at the same time! Adriano, with the help of his girlfriend, Vladi, a professional dancer, explains the basic steps of this dance, which has its origins in the ghettos of Buenos Aires.

Claudio Capotondi, sculptor, takes us into his "thinking room" and talks about the process of taking a block of marble and turning it into a work of art.

Manara visits the dead professor's daughter and it becomes ever clearer to Manara that the mother's alibi won't hold.

Lara Rubino visits Lenni's villa and finds that his wife has broken in. Manara uses his considerable charm on a vet.

The autopsy shows that the victim couldn't have pulled the trigger, but Manara's boss insists on suicide. Manara and his team have other ideas.

Claudio Capotondi is a sculptor who lives and works in Pietrasanta, a Tuscan town famous for its marble and marble sculptors. He talks about an upcoming exhibition.

From the gardener, Michele, we learn that the dead professor was not well liked. Rubino lets us know about her soured friendship with Manara at the police academy.

Manara arrives at his hotel, and the clerk is curt with him until she learns he's the new commissioner. Manara and the deceased are the topics discussed by Rubino and her aunt.

Rubino, the new inspector, can't stand being in the same room with Manara. And when he doesn't even remember why, she really gets angry. But then they get some interesting news from the morgue...

Commissioner Manara meets up with Lara Rubino, his old classmate from the police academy. She's less than happy to see him and slaps him right across the face.