2.5 stars. For me, this was a thriller that made no sense until the very end. What could have helped it along was an insightful look at a relationship with a deep power imbalance, but I never felt like that part of it came to life.
So far I have not seen a queer domestic thriller that really worked for me. Then again, most non-queer domestic thrillers don't really work for me. It's a tricky genre and for folks who like to read heavily in it, this will be a great entry. But for me, looking for just the best of it, it didn't give me what I'd hoped for. Domestic thrillers often involve the inherent inequality of patriarchy, but those issues don't only play out in non-queer relationships, and tension in a relationship can come from many sources. In that sense, Vernon makes a smart decision here to center his story around one of the classic gay pairings, the older successful man whose relationship with a younger man isn't just about an age gap, but power inequality particularly when there's a strong financial incentive for the younger man to stay. (It's not entirely clear how much younger Oliver is than Nathan, even if Oliver is still in his teens when they meet, Nathan was a resident still so would likely have been in his 20's.)
For me, the problem was that the bad guy, Kristian, who assaults Oliver at the beginning of the book, becomes the kind of villain who is so over the top that it doesn't make sense. And even if you suspect there may be a reason for it, you are stuck just waiting around for 95% of the book to see if you're right or if this book doesn't make any sense at all.
The relationship between Nathan and Oliver is deeply messed up, and that certainly is clear to the reader, but neither Nathan nor Oliver really spends much time thinking or considering it. It's unclear what they like about each other or why they're together, except that their relationship dynamic is set up to make it difficult to break up. I really wanted to have some character development with one or both of them, a realization of how unhealthy things were, some kind of progress. Without that I just got more frustrated with the rising Kristian plot, with this monster who has no seeming reason for what he's doing, and felt more and more like my preference was another book where the villain was Nathan, the truly awful boyfriend.
At least the ending addressed my frustrations, so at least there's that. Most of these thrillers can fall very flat at the end, I just didn't like how long I had to wait before it came together. I want it to be exciting all along the way.
Content warning for attempted rape, physical assault with sexual motivations, prescription drug abuse, and there is a pet in peril but it isn't hurt. There is not really a queer suffering issue here, though there is a whole lot of classism which I would hope you'd expect in a book with a lot of wealthy cis white gay men.