From May’s final work we learn details of his childhood vision impairment and his rickets, both a result of being malnourished in his childhood years. His strange state of mind that followed in later years he described in much detail, yet despite his attempts to understand it, it confused him and presented an enigma to all his biographers. This puzzle is analyzed and solved here. What Karl May described and attributed as his reaction to stress is today labeled Dissociative Identity Disorder, which was not recognized nor understood in his own time. This book was written by Dr. William E. Thomas and the short video was Narrated by Victor Epp.