“It is ridiculous, the hairstyle he has, everything,” says Hyeonseo Lee. She is talking about Kim Jong-un, the supreme leader of North Korea and in her old life, before her defection from the tightly controlled regime, saying such a thing would condemn her and her family to prison or to death. “I could kill three generations of my family,” she says. Lee defected at 17, embarking on a perilous journey. Now 34, she has finally written her account of life and escape from the Hermit Kingdom in a new book, The Girl With Seven Names. The woman was raised in...