"A perfect little figure," he says. "Our mannequin girl." She knows who mannequin girls are. They are in her grandmother's Working Woman magazines, modeling flouncy dresses and berets. "Bend," he tells her, and she does, so pliant, so obedient." Growing up in Soviet Russia, Kat Knopman worships her parents, temperamental Anechka and soft-hearted, absent-minded Misha. Young Jewish intellectuals, they teach literature at a Moscow school, run a drama...