Nonfiction by Diane Ackerman.
This should have been a good book. It's a great premise: a true story about Antonina Zabinski, who lived and worked at the Warsaw Zoo during the German occupation of Poland. She and her husband joined the underground resistance movement to save hundreds of Jews (and Slavs, gypsies, or Poles) from Nazi extermination. This would make a fabulous movie.
Unfortunately, I could not engage with the book at all. The author gives plenty of facts, but does not seem to tell the story of any real person I could relate to. I tried to read this book for weeks and gave up.