Definitely Catholic, but also political
This is a book that has a mission-to point out the wrong in the world and show how sin and Satan have brought it about. It is definitely written from a traditional Catholic point of view in regards to abortion and the family. As a Catholic, I could appreciate that and recognize the role that those issues played in both the book and the world. However, the book is also written from a Politically and Economically conservative point of view which is not specifically in line with church teachings. There was one reference to unchecked immigration, for example, which I thought was more political than moral and which, as a Catholic, I do not believe aligns at all with the US Bishops current teaching on the issue. There were also references to different economic systems; the church takes no formal stance on these.
While the book is decidedly Catholic, it did not shy away from the sex abuse scandal or misuse of money in the Church. In fact, most of the "bad guys" in the book were priests! These antagonists were balanced by "good guy" priests and lay people, with good ultimately defeating evil.
Overall, this was a quick read. It was fast-paced, kept me interested and worth the read. It would have been better if the political leanings weren't to blatant, but they did not ruin the story for me.