In “The Red Prince,” historian Timothy Snyder details the life of someone most of us have never heard of: Archduke Wilheim von Habsburg. But maybe we should have. Raised to be King of Poland, he instead wanted to unite the Ukraine, which he failed to do. So he became an opponent of Hitler, an Austrian monarchist, a playboy (particularly in, of course, France) and a spy for the British against Stalin..

Also new in nonfiction this weekend is When Men Become Gods by Stephen Singular, about Mormon polygamist Warren Jeffs, and The Religious Case Against Belief, in which James P. Carse, professor emeritus of religious studies at New York University, argues that belief – which limits thought and “encourages hostility” — has corrupted religion.