On the evening of December 11, 2006, the Erba’s slaughter is consumed. Four the tortured bodies: Raffaella Castagna, her two-year-old son Youssef, Paola Galli, Raffella’s mother, and Valeria Cherubini, a neighbour. The only one who escaped the fury of the murderers, by a miracle: Mario Frigerio, the one who points out the culprits of the massacre in Olindo Romano and Rosa Bazzi, neighbors and residents on the ground floor of the building. However, without any objective evidence, few hours after the crime, the “designated” murderer is Abdel Fami Azouz Marzouk, husband and father of two of the victims, but above all, “the foreigner”, “the Moslem”, “the undermined”. There is no need for the media to wait for confirmation or verification. And from the search for the scapegoat to the media process, the step is very short. An exemplary case, this one in Erba: because this time it is not the killers who misdirect the investigation, but the investigators themselves who make a resounding blunder. A blunder sufficient to ensure that, few hours after the multiple homicide, the news is no longer that of the massacre, but the problem of the immigrant presence in Italy. In fact, the massacre of Erba, one of the most discussed crime news events of recent times, has become a case study, not only for its seriousness or for the alternation of investigative operations, but also for the incredible story that involved the young Azouz until the most recent times. To reconstruct it, download the contribution below.