Listener beware! Untrue is Wednesday Martin’s unvarnished, cogently argued, colorfully detailed take on women who are “untrue.” She’s talking about women’s sexuality, adultery, cheating and “stepping out,” and she doesn’t mince words or use euphemisms. So if you’re uncomfortable with sexual straight talk, this book is not for you. But if you’re perfectly OK with it, there’s much to shake up your perceptions. Martin sees the sexual double standard, with its misunderstanding of women’s hearts and libidos, as “one of our country’s foundational concepts” along with life and liberty. To explore female infidelity and sexual autonomy, she talked to and synthesized the work of experts—primatologists, anthropologists, psychologists and more—who challenge our received notions of female promiscuity and see it as a behavior with a “remarkably long tail.” Martin reads her own provocative, stereotype-slaying words with elan.