The paper deals with the story of Giovanni Corvi, who in September 1924 killed the Fascist deputy Armando Casalini to revenge the murder of Giacomo Matteotti. Since then, Casalini experienced the most representative corrective structures of the fascist regime (prison, asylum, exile and internment camp). His case caused inevitably an overlapping among authorities, which were asked to fulfill different requirements: the judicial authority (for the criminal part), the psychiatric authority (to verify his criminal responsibility and healthcare detention) and the public security authority (that characterized his entire life, always being predominant on the other two).