Marta confides in Ginevra about Luca's declaration of love. Meanwhile, a bus arrives in town, and, as the passengers are getting off, there's a problem. At the same time, Luca is giving Ada a hard time as she drives him to the bus stop to meet his sister.

Eva goes with Lola to see about getting her car fixed. The head mechanic comes across as shockingly crass, but the assistant is nice and easily fixes the problem with the car. Lola can't help flirting with him.

Martino has some awkward conversation with Sally. Meanwhile, word about Martino's disappearance has spread all over Italy, and as a result, the TV show Missing has come to town.

The factory in Pozzuoli is a success, but the company has taken financial risks, which may be why Adriano is having nightmares. Dalmasso is closely following Adriano's movements.

Alberto Angela focuses on one of the floor inlays depicting the story of Siena according to tradition. Siena shares a city symbol with Rome.

The investigation gets going. Luca, officially still off duty, had just come to meet his sister at the bus, but naturally, he can't help getting involved in the case, which causes a bit of confusion on the team. Rosmini comes to examine the victim.

If the girls thought the mechanic was bad news, they now discover he is extremely bad news. Eva and Lola go to the concert to see Franco's friend perform, but are greeted by a different scene altogether.

Peppino and Martino watch the TV show, and as Martino's story unfolds, Peppino has pretty much taken center stage and is basking in it. During the interview, he says things Martino is not thrilled about, to say the least.

The laboratory team is all excited as they come up with some great new innovations. They need more funding, however, and decide to demonstrate the results directly to the board.

Alberto Angela explores the Piccolomini Altarpiece with sculptures by Michelangelo, and the beautiful frescoed Piccolomini Library within the walls of the Siena Cathedral

Tiziana is confused because she has no clue that she might be a suspect. Raimondi, who shows up with Rivera, is confused because he doesn't realize Tiziana is Luca's sister. Poor Tiziana!

Eva goes to see Armando the mechanic, disguised as Franco's rich cousin. She intimidates him with her fancy language and manages to get the computer back. Franco has to find a job to pay his rent and tuition.

Martino, Sally, and Peppino are watching the TV show Missing, where there is some news about where Martino might have been sighted. A very special appeal is made that's very disconcerting for Martino. Peppino is philosophical about the whole thing.

Karen continues to do her work for the Americans, spying on Olivetti and the Community Movement. Dalmasso and Mauro are seriously trying to undermine Olivetti's efforts to get elected and to bring him to his knees financially.

Andromeda, a true animal lover, tells us another story of an abandoned animal, this time a very unlucky cat.