1 | Guido | Brunetti | Protagonist / An Italian detective. |
| Guissepe | Patta | Guido Brunetti's superior. |
| Lieutenant | Scarpa | A native palermo assistant of Guissepe Patta. |
| Elettra | Zorzi | Guissepe Patta's secretary. |
3 | Lorenzo | Vianello | A police inspector. |
| Luca | Vianello | Vianello's son. |
| Alvise | | The shortest man in the police force. |
| Elisa | Crosera | Acquaintance of Paola / A teacher. |
| Paola | Brunetti | Guido Brunetti's wife. |
| Alessandro | Gasparini | Signora. Elisa Crosera and Tullio Gasparini's son. aka: Sandro. |
| Aurelia | Gasparini | Signora. Elisa Crosera and Tullio Gasparini's daughter. |
5 | Raffi | Brunetti | Guido and Paola Brunetti's son. |
| Chiara | Brunetti | Guido and Paola Brunetti's daughter. |
6 | Claudia | Griffoni | Guido Brunetti's colleague and friend. |
| Ambrosio | | One of the Bocchese's men who responded on Tullio's accident. |
8 | Dottore | Stampini | The chief neurologist. |
9 | Tullio | Gasparini | Signora. Elisa Crosera's husband / Alessandro and Aurelia's father. |
10 | Bianca | Rallo | The director of Albertini School. |
| Bruno | | Guido Brunetti's friend. |
| Manrico | | Guido Brunetti's old acquaintance. |
12 | Gianluca | Fornari | A man who sells drug to minors. |
13 | Dottore | Bordini | A doctor. |
19 | Matilde | Gasparini | Tullio Gasparini's aunt. |
| Beata | | Matilde Gasparini's caretaker. |
21 | Marco | | Matilde Gasparini's doctor. |
| Anna | Marcolini | Matilde Gasparini's friend / A cheese seller. |
| Signora | Lamon | Matilde Gasparini's friend / Dottor. Donato's client. |
| Girolamo | Donato | A pharmacist who owns the Farmacia Della Fontana / Matilde's pharmacist. |
| Beatrice | Rossi | Guido Brunetti's first girlfriend. |
| Lucilla | | A pharmacist. |
| Rolando | Rossi | Beatrice Rossi's husband. |
23 | Constantino | Belli | Lucia's boyfriend. |
| Lucia | Arditi | A woman who was in the hospital for 3 days. |
| Cara | Marini | A client in the drug store. |
| Carla | Roberti | Dottor Donato's co-doctor / Matilde Gasparini's former doctor. |
28 | Barbara | | Signorina Elettra's sister. |
| Signor | Tassetto | Doctor Ruberti's patient. |
| Teodoro | Ruberti | Cara Ruberti's son. aka: Teo. |