Millions of people around the world are obsessed with actor Benedict Cumberbatch. The most hardcore fans refer to themselves as 'Cumberbitches.' Author Tabatha Carvan, a wife and mother, counts herself among the Cumberbatch groupies. But in her new book, This Is Not a Book about Benedict Cumberbatch: On Finding Your Thing & Loving It Like Your Life Depends on It, she argues there's nothing wrong with her fixation. In fact, she says her passion for the man helped her find her sense of self and regain joy in her life.