En deuda con la vida. Anceschi is seriously wounded in a supermarket robbery, needing 0 blood type to survive. Donor later dies - apparently suicide. Captain dissents and asks Don Matteo's help while staying in the rectory for recovery.
Anceschi is wounded while attempting to prevent a robbery in a supermarket. He survives thanks to a blood donation from a local woman who is found dead, an apparent suicide, a few days later. Anceschi decides to investigate.