| 1 | Guido | Brunetti | Protagonist. |
| | Paola | Brunetti | Brunetti's wife. |
| | Luca | Ippodrino | Friend and colleague of Guido's father. |
| | Franca | Righti | Brunetti's first girlfriend. |
| | Mateo | Lunghi | A gynecologist. |
| | Giuseppe | Patta | Brunetti's superior. A Vice-Questore. |
| | Graziano | | The guard on duty. |
| | Foa | | Brunetti's contact. |
| 2 | Baba | Diome | The Senegalese barman. |
| 3 | Elletra | | Patta's secretary. |
| | Claudia | Griffoni | Brunetti's colleague. |
| | Jojo | Peterson | Lucy's friend. |
| | Lucy | Watson | The girl who was injured. |
| 4 | Guilio | D'Alessio | Brunetti's friend. |
| | Filippo | D'Alessio | Guilio's father. |
| 5 | Marcello | Vio | One of the men who left the injured lady in the hospital. |
| | Filiberto | Duso | Vio's companion. |
| | Laura | Nieddu | The Captain. |
| | Pietro | Borgato | Vio's uncle. Owner of Borgato Transporti. |
| 6 | Pucetti | | Brunetti's colleague. |
| | Lorenzo | Vianello | Brunetti's colleague. |
| | Sergio | | The owner of Ponte Dei Greci. |
| 9 | Valerio | Cesco | Brunetti's old classmate. A human resource staff. |
| 10 | Chiara | Brunetti | Brunetti's daughter. |
| 11 | Giovanni | Borioni | The son of Marchese. Brunetti's friend. |
| | Marchese | | Giovanni's father. |
| | Timoteo | Borioni | Giovanni's brother. |
| | Ignazio | Alaimo | Officer-in-charge of Capitaneria Di Porto. |
| 13 | Raffi | Brunetti | Brunetti's son. |
| 14 | Anna | Bruzin | The boat passenger. |
| 18 | Samuel | Tantucci | One of Brunetti's contacts. |
| 21 | Mr. | Watson | Lucy's father. |
| 22 | Nico | | The Gelateria's owner. |
| | Enrico | Luliano | A magistrate. |
| 27 | De | Persio | A lawyer. |
| | Elena | Rocca | Borgato's secretary. |
| | Donato | | Brunetti's old friend. |
| | Crema | | One of Alaimo's pilots. |
