Monsignor is a 1982 Catholic drama film directed by Frank Perry about a Roman Catholic priests rise through the ranks of the Vatican, during and after World War II. Along the way, he involves the Vatican in the black marketeering operations of a Mafia don, and has an affair with a woman in the postulant stage of becoming a nun. He eventually repents and returns to his faith, attempting to make right the things he has done wrong.
With the Vatican having financial difficulties during World War II, a young priest from America is sent for, recommended because of his accounting skill.Father John Flaherty does indeed have a good head for figures, but also believes in any means to an end. To raise money for the church, he is willing to enter into a black market operation with the Mafia, selling cartons of cigarettes by the tens of thousands for a percentage of the take. ........
Source: Wikipedia