September 11, 1958. Rome. Maria Martirano is found strangled in her cuisine. Wear the dressing gown, the trick is fresh. No effort. He was waiting for someone. The investigations bring to the husband, the entrepreneur Giovanni Fenaroli, accused of having commissioned the crime to pocket the life insurance. But something does not come back. The alleged assassin flies to Rome with a false name … belonging to a man who will die in mysterious circumstances. The victim’s jewels reappear months later, without footprints. And a former secret agent, years later, reveals: perhaps the Fenaroli had allegedly reserved documents in their hands capable of undermining the state.