This story promised to be an interesting concept, but ultimately falls flat with completely unbelievable characters and an utterly unrelateable narrator. Everything is told from first-person perspective by a character named Jack, an utterly spineless and weak, whinging man who recognizes (spoiler alert) signs that his wife is having an affair. Rather than do anything about it at all, he simply says that it's "too hard" to think about. The first third of the book is about 75% detailed stories about being a stay-at-home dad with an unfaithful and unreliable wife. The other 25% is a mix of stilted, unreliable dialogue (including an awkward exchange between Jack and another man about which diapers they like best, a conversation that reads like a sophomoric attempt at stereotypical "haha look the genders are different! Men like sports!" humor) and inaccurate info-dumping meant to make you believe the author knows more about things than he really does. For instance, the author states that an IV in a hospital patient has a metal needle that needs to be removed before an MRI. This is simply untrue, and it's information that is very easily learned with about 5 seconds of research. Just ask a nurse if you don't know.
Overall, this is a very disappointing book that reads like a high school attempt at writing a thriller while doing minimal research and knowing nothing useful about actual human behavior.