New York, late 1912. Around the plain wooden tables of Polly's Restaurant in Greenwich Village a group of women gathered, all of them convinced that they were going to change the world. It was the first meeting of "Heterodoxy," a secret supper club. The goals of the group were simple: they would meet to talk about their lives, their politics, and the still-not widely recognized idea that women were fundamentally equal to men. The women of Heterodoxy...