JT LeRoy was a teenage hustler who emerged from a childhood of abuse, drug addiction and homelessness to write about his harrowing experiences and become a literary sensation as taken up by Madonna, Bono, Winona Ryder, Carrie Fisher, Courtney Love, Lou Reed and Gus Van Sant, among many others. His back story was shocking — raped at five; pimped out by his prostitute mother at truck stops; HIV-positive; heroin-addicted …sit on that, Angela’s Ashes! — but the biggest shock, when it arrived? He did not exist.