Author Jill Lepore uncovers the political history behind Wonder Woman. The comic book icon’s creator, William Moulten Marston, was inspired by both the women’s suffrage movement and erotic pin-up art. Marston also had a secret life: He had a wife and a mistress and fathered children with both of them. Critic-at-large John Powers reviews the documentary 'Becoming Cary Grant.' Film critic David Edelstein reviews 'My Cousin Rachel.'