Murders of the Procession 21 years old

It's the 2nd of November in Italy, "All souls day", when an old woman finds the corpse of young, Father Salvatore inside the church. He was young, but very sick, and the coroner says he died due to heart failure. But the young, Inspector Santi, having just arrived in the small village, from Naples, has a lot of questions he can't answer about the death of the priest.