As she approached her fiftieth birthday, Tracey Jackson found herself bombarded by a catchphrase on everyone’s lips: “Fifty is the new thirty.” With a comedy writer’s training and a screenwriter’s eye for detail, Jackson skewers that particular myth with a hilarious, bare-knuckled, and ultimately practical appraisal of what middle age really means today. Jackson not only faces the elephant in the room, she puts it under a (very large) microscope, confronting the truth about death, work, and sex in what the French call the “third age.”