A young woman named Savannah Knoop spends six years pretending to be the celebrated author JT LeRoy, the made-up literary persona of her sister-in-law.A young woman named Savannah Knoop spends six years pretending to be the celebrated author JT LeRoy, the made-up literary persona of her sister-in-law.A young woman named Savannah Knoop spends six years pretending to be the celebrated author JT LeRoy, the made-up literary persona of her sister-in-law.