For many years the debate has raged, is the Shroud of Turin really the burial cloth of Christ or is it a hoax?  Nancy Grace sits down with dear friend and author, Guy Powell, to discuss his new book "The Only Witness: A History of the Shroud of Turin."   The book is historical fiction, a depiction of how the Shroud made its way to its current resting place in the  Cathedral of St. John the Baptist in Turin, Italy. Powell gives a brief overview of the testing and research done on this treasured Christian relic to determine its authenticity and lets us inside his motivation behind writing the compelling historical fiction.