Elvis Presley with his then girlfriend Linda Thompson at the Hilton Hotel in Cincinnati, Ohio (Photo by Tom Wargacki/WireImage)

At 2 p.m. on August 16, 1977, Elvis Presley, just 42, had been dead for several hours. His body was lying on the bathroom floor. His head was resting in a pool of vomit. He was wearing gold pajama pants rolled up at the ankles and was lying on a book, which some claimed was the Holy Shroud and others, an illustrated book on sexual positions according to the zodiac sign.