In April of 1914, fifteen-year-old C. S. Lewis walked into a sick neighbor's bedroom for a visit. This neighbor, eighteen-year-old Arthur Greeves, was reading a book titled Myths of the Norsemen. Their meeting was a spark that would fan into a flame a friendship that lasted almost fifty years. Drawing on original research of the 296 letters written by Lewis to Greeves that span the life of their friendship, readers will explore the deep, emotional,...