This book is almost well written. Perhaps with some cultivation Carroll could have been a stronger writer. I have outlined below my chief criticisms of this book.
1. Overwritten. The prose is pseudo-poetic, and the strained effort of the author to write descriptions as ornamental as possible becomes dreadfully obvious the more you read. Some common signs of this are the excessive use of metaphors and similes, sometimes several on a single page; the effect, as is the case with most overwritten prose (Lord of the Rings comes to mind), is the use of many words and much space that conveys very little. The trick is to write in a way that builds a sense of atmosphere. I won't digress on this point, but I think Dickens, Tolstoy, and Edwin O'Connor are excellent examples of successful writing for this very reason.
2. Poor character development. The characters are endlessly described in the metaphorical, pseudo-poetic style, but very little is actually said about them. Most are simply too perfect to be plausible. Father Seumas, for example: Does he have a single flaw? And yes, as a Catholic, I understand individuals are made perfect by God's grace as they progress through the spiritual life. But I'm not referring only to moral flaws. Father Seumas is never, as far as I recall, described as having a single flaw of any kind: clumsiness, a speech impediment, a little extra weight, saying the wrong thing with the right intentions, impatience, ignorance, anything. [Father] Michael Murray is the same way. This is one of those stories where characters are either perfectly good or perfectly evil. Luke is the only exception, but he was poorly developed as well. We're to understand that he's fallen into bad habits but desires salvation. Carroll pretty much makes that the sum of his character, until he finally chooses one or the other at the end.
3. Weak story construction. A well-written novel builds with successive episodes of rising action, often with many characters and sub-plots interwoven throughout. It takes planning and an intricacy of deliberation. "The Stranger" lacked this. Mr. McGough's weak relationship with his wife, for example, is not described until over half way through the book, and yet these characters have been present since the opening chapter. And, to make it worse, the conflict in their relationship is almost entirely solved as soon as it's presented to the reader! It's almost like it was an afterthought. Similar examples can be found throughout the book: story details that spring up unexpectedly, only to disappear or be rendered pointless soon after. I think one of the reasons for this is that Carroll doesn't seem to know the purpose of his story. Yes, it's about a man unfairly accused who is vindicated in the end. But is that it? There's opportunity here for commentary on how people get swept away in the passion of a mob, or the necessity of forgiveness. Themes such as these show through weakly at times, but never take center stage. I suppose you could say it's about the importance of carrying your cross, and that wouldn't be a message without value certainly, but it resembles a moral platitude that's dramatized somewhat superficially and without realism.
A further example of poor story construction are the absurd contrivances of plot: 1) The stranger (Murray) ends up in the same village as the man who framed him; 2) Patch, the primary villain of the story, just happens to be the brother of the man who framed Murray; 3) Luke's sudden death without any sort of precedent; 4) Murray just happens to be passing by Luke as he's dying in the middle of the road -- at night -- in the rain. (Seriously?); 5) For no plausible reason, Murray passes out after giving Luke absolution. There's no explanation for this beyond his ecstasy at once again performing the sacrament. And then he becomes sick for days. Clearly this is meant to be dramatic and it allows for plenty of sentimental scenes between Murray and Father Seumas and Nell. The illness is without reasonable cause. It's an excuse for these scenes that Carroll obviously wanted to write, whether the context called for it or not.
Despite being written in the early twentieth century, Carroll seemed to have been writing in the romantic tradition. Whether he did so consciously or unconsciously I can't say for sure, though I'd be inclined to guess the latter. I suspect he was a very good person and Catholics who are looking for the antithesis to contemporary works that seem fixated on sex and despair, are likely to find a kind of comforting relief in this book. I wouldn't discourage someone from reading it, as long as they recognize it's technical failures as I've outlined above. I could certainly understand how someone would enjoy this book. Personally, however, I would recommend Edwin O'Connor's "The Edge of Sadness" or Georgos Bernanos's "The Diary of a Country Priest".
I would like to conclude by thanking Cluny Media for publishing these sorts of books. Although I didn't prefer this particular title, I have bought other excellent books from them that would otherwise have been out of print.