Kenneth Branagh, as expected, performed very well. What was difficult to absorb as "possible" were the Catholic religious elements depicted. They were wrong and inaccurate. For example, the Mass vestments were not correct. The conversations and characterizations of the pastor and the young priest, for that period of time (Boston in the late 30s, early 40s) were off key, to say the least. The plot was interesting, but the film was too long, and there was too much "symbolism", and the "next move" was always predictable. With such a fine cast, and a great story, the producers and the directors should have taken time to be more accurate and correct about details. Another example of the lack of care was the scene where the young priest is seen administering "Anointing of the Sick" [formerly called "Extreme Unction"] to a corpse about to be buried. This never happens and is actually forbidden in the RC Church. Dead people cannot receive "sacraments." Attention must be paid. Details, details, details. The truth is in the details. However, I did enjoy it. I think most people would find this film interesting and entertaining.
