Camino Island by John Grisham: the best part of this novel was the beginning, specifically the description of the theft of priceless manuscripts from Princeton University and the federal investigation that immediately followed. Unfortunately the narrative fizzled out after that.
How to Solve Your Own Murder by Kristen Perrin: a fun mystery, wherein the murder victim tasks her putative heirs with solving her murder if they want to inherit.
Nettle and Bone by T. Kingfisher: I continue working my way through Kingfisher's novels. The subject matter in this one -- patriarchy, misogyny, domestic abuse -- is bleak, but Kingfisher wisely balances it with fairy tale elements like impossible tasks and goblin markets, along with a healthy dose of absurdity (such as a demonic chicken).
PopCo by Scarlett Thomas: I don't know why it took me so long to read this given how much I liked Our Tragic Universe, not to mention the math, puzzles, and cultural commentary in this book. And, for the most part, it was really good! The only flaw was the reveal late in the novel of a plan that seemed to me (but not the characters, apparently) hopelessly idealistic and not at all well thought out. In that sense, it reminded me of The Absolute Book.