The Marziales are an important family from Viterbo and in the garden of their villa a retired friend of Rocca's body is found, whose wife had died suspiciously, hit by a pirated car. Thanks also to the help of Francesca (who tutors a niece of the landlady), Rocca investigates the rich family, omertosa and hostile, reaching the solution of yellow.

The show’s own verdict is on its page.