CNN International anchor Zain E. Asher talks about her memoir "Where the Children Take Us: How one family achieved the Unimaginable." The story revolves around how her widowed mother (who lost her husband in a tragic car accident) managed to hold the family together and raised her four children to become great successes. (Zain's siblings are a successful entrepreneur, a medical doctor, and an Oscar-nominated actor.) The story is also an immigration story because the family had emigrated from Nigeria to South London.