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Ugh, this book could have been so good. The first 400 or so pages are really good setup, but the payoff is nonsensical, preachy, and disappointing at best. The second half is basically just catholic propaganda and genocide denial with a very lackluster reveal that it was aliens all along, an evil atheist who tries to nuke everyone because he resents his christian upbringing, and guess what? The aliens are catholic too! (Not exactly, but pretty much)