"Before Supernatural's Sam and Dean, there were their parents, John and Mary. Told from the perspective of narrator Dean Winchester, The Winchesters is the epic prequel and untold love story of how John Winchester met Mary Campbell and put it all on the line to not only save their love, but the entire world. When John returns home from fighting in Vietnam, a mysterious encounter sparks a new mission to trace his father's past. In his journey, he crosses...