Gregg Allman was a pioneer of Southern Rock, with his group "The Allman Brothers Band." His good looks, bad boy attitude and musical prowess made him the golden boy of rock and roll. After years of hard living, he got a liver transplant to treat cancer. So how did his brand new liver become cancerous just 2 years later? Forensic Pathologist, Dr. Michael Hunter, examines Gregg's death certificate and other documents to reveal what was going on inside Gregg's body that caused his tragic death at the age of 69.