Best-selling author Robert Kolker joins "CBS This Morning" co-host Gayle King to discuss his new book, "Hidden Valley Road: Inside the Mind of an American Family." The book is a true story about a family of 12, and how their experience with mental illness helped transform the research in mental health. Kolker also shares his reaction to learning Oprah Winfrey announced it as a rare non-fiction selection for her Oprah's Book Club.