Elvis Presley’s brother on sex, drugs and the King of Rock and Roll in 1970s Las Vegas

EXCLUSIVE: Elvis Presley's brother David Stanley spoke exclusively with Express.co.uk, on the very stage where the King of Rock and Roll performed every one of his Las Vegas residency shows, about dropping of high school to work for the music icon in the gun-toting, sex and drug-fuelled world of the Memphis Mafia.