What killed Tutankhamun? Ever since the tomb of the boy king was discovered in 1922, he has become arguably the most famous pharaoh of all ancient Egypt. But his mysterious death at just 19 years of age has never been explained. Now, Dallas Campbell reveals new scientific research aimed at getting to the truth. A CT scan of the pharaoh's mummified body creates a full-size image of the real Tutankhamun, while DNA analysis uncovers a shocking secret about his family background - and the genetic trail leads to a revolutionary new theory about his sudden and unexpected death