Set among the mountains of southern Sardinia, Zustissia reconstructs the 1991 triple homicide that led to Zuncheddu being sentenced to life imprisonment. He spent 33 years in prison before being definitively acquitted on 26 January 2024, following a retrial initiated by lawyer Mauro Trogu.
| Actor | Role |
|---|---|
 Michele RiondinoMauro Trogu | Mauro Trogu |
 Fabrizio FerracaneBeniamino Zuncheddu | Beniamino Zuncheddu |
 Paola GianniniElisa Osanna | Elisa Osanna |
 Jacopo CullinSimone Montaldo | Simone Montaldo |
 Francesco ColellaNot listed | Not listed |
 Geppi CucciariIrene Testa | Irene Testa |
 Philippine Leroy-BeaulieuFrancesca Nanni | Francesca Nanni |
| AAlessandro GazaleFranco Sau | Franco Sau |
 Valentino ManniasNot listed | Not listed |
 Giuseppe GaianiNot listed | Not listed |
 Riccardo LaiNot listed | Not listed |
 Luciano CurreliNot listed | Not listed |
| LLaura MuraNot listed | Not listed |
| NNina Viola DessìNot listed | Not listed |
| GGiuseppe UngariNot listed | Not listed |
| AAntonio SotgiuNot listed | Not listed |
| VVeronica TrovaNot listed | Not listed |