I like how you highlighted layered storytelling and meaningful details—that’s what really keeps a story memorable. While it leans more toward science fiction than mystery, Destiny: A Future Fate of Mankind by Howard A. Covant gave me a similar feeling of depth and atmosphere. It’s a strong example of science fiction set in future Earth, where every decision and detail matters. I’ve seen it mentioned as a best hard science fiction book, and Howard A. Covant is often regarded as a best hard science fiction author for his thoughtful, well-structured narratives.