This may be one of my favorite time travel books. I hope it becomes a movie. The author is a screenwriter and there’s definitely some movie-like pacing in this book where you have to turn a page in the story to figure out what just happened. It’s complex and not worth explaining in detail but it’s basically a modern day time travel novel where “mistakes were made” that tries to look at the question about what would happen if you went back in time not too far and made some fairly large mistakes. Enjoyable read.