 |
 | A prisoner is found dead while Don Matteo substitutes for the prison chaplain. The fingerprints of another prisoner are found on the murder weapon. With Don Matteo's help, Nerino's father, also in prison, reveals | |
|
| information useful for the investigations but that will cost him more time in prison. Nerino's father confirms having seen the suspect in the boiler room at the time of the victim's death. Don Matteo understands what really happened while watching a scorpion fight. |
|
