The mystery solving parish priest Father Brown who was the creation of converted Catholic G.K. Chesterton got an American makeover in that most American of cities Chicago for the Father Dowling Mysteries. That man did get himself involved in more situations that were not necessarily related to his calling which made for interesting episodes. Tom Bosley as Father Dowling was a trial to both the Catholic Archdiocese and the Police Department which he was always showing up.
That's usually the way it is with most television series, the private detective or the amateur is constantly showing up professional law enforcement. As viewers we enjoy that.
Unlike Chesterton's detective Dowling did not dwell too much on Catholic dogma, the better to get a universal audience. Tracy Nelson was a young nun who shared Dowling's taste for mystery and adventure and her being a nun and all that that entailed put her in some interesting situations as a Dowling operative so to speak.
Sad to say the show did run out of creative ideas and that was probably due to the parameters imposed by making a priest your lead character. When Dowling confessed to really fathering a child before taking his vows of celibacy you knew the jig was up for this show.
Still it was a pleasant series to watch and Tom Bosley and Tracy Nelson gave a good account of themselves in the series.