Prosecutor Corradi decides to entrust Nina's safety exclusively to Major Patrizi. But Commissioner Fontana suspects that the latter is conniving with the Neri clan to eliminate the young woman. These are the worst hours for Fontana who sees her young friend completely exposed. Irene and Anna are also in crisis because the case of a homeless man who died during the night seems to ambiguously involve the son of their colleague Vittoria, the high school student Francesco.