The pacing is poor and the book is tedious and flat. From a creative perspective, it's not a bad book, and there are chapters that are extremely well written. The problem some people will have with the book are expectations that this is a thriller. The guy who wrote Fargo and Before the Fall somehow is the same person who wrote this obsessive, somber often monotone case study into a father's internal deep dive into his parenting history and if and why his child could commit an assassination. If you are in a mental place to accept that kind of relentless introspection, where a character's insight is the most exciting plot twist you will find, then you may enjoy this. If you are thinking, this will be a fun story on how a father exonerates his child and tracks down the real killer, or something like this, you're going to resent the hell out of this book. It's right at that line where it's written just good enough to obligate you to finish it but not good enough to ever yield much if any entertainment value.
Minor problem with the book- He has a habit of writing things that sound profound but break down when you think about them. For example, in the beginning he wrote something like "illness makes us all into narcissists." Then later in the book there's a character who has cancer and her illness made her selfless. The reality is we all react differently to imminent death. Another is, paraphrasing, "is there anyone more of a fascist than an anti-fascist with a gun" That sounds smart for a second but fascists don't step down when politely told to. The Allies weren't as much of a fascist as Hitler and the Nazis because they have to stop them with force. There are a lot of superficially intelligent sounding examples in the book that did get on my nerves.