"Euphoria" by Lily King

I really enjoyed reading this book. Lily King has a gift for subtly evoking settings and characters so it seems you're really there, in the book, an anthropologist on the Sepik river in the years between the two world wars. 

Anthropologists Nell Stone (loosely based on Margaret Mead) and her husband Fen are transitioning from their largely unsuccessful study of the Mumbanyo in New Guinea when they cross paths with fellow anthropologist Andrew Bankson. This intersection brings both a professional collaboration and a personal connection (more commonly known as a love triangle). Each character has a slightly different attitude to their work, and to each other, and the pages crackle with the resulting tension.

I can't remember why, but as soon as I finished reading the entire book (which, of course, included the Reader's Guide at the end), I turned back to the beginning and reread the first chapter or so. It was interesting to see how different an experience this was. The first time around, the characters had a clean slate. The second time around, I could see the quiet clues that later added up to the negative slant of one main character. I think I was even more impressed with the book after seeing this evidence of how carefully and delicately King had crafted her characters and plot.