* Free Love, by Tessa Hadley -- Somewhere I've read that every novel is about whether life is worth living. I'm not sure that's true about every novel (Don Quixote? The Phantom Tollbooth?) but this book definitely is. Phyllis Fischer blows up her perfect life, provoking the question of how much damage you can do in pursuit of your true self before it becomes unforgivable.
* Trust, by Hernan Diaz -- I don't always love puzzle novels but this one really worked for me. An exploration of a woman's life from four different perspectives, in which the truth doesn't emerge until the last page.