René Marsh, a CNN correspondent, joins CBS News' Vladimir Duthiers to discuss the loss of her two-year old son, Blake, to brain cancer and how the ordeal led her to write "The Miracle Workers: Boy vs. Beast," a children's book in his honor. Marsh shares how faith helped her and her husband through the difficult time. She says Blake continues to be an inspiration to her today. The book is available at ReneMarsh.com and proceeds from the book will go towards pediatric brain cancer research.