{West Memphis Three to appear at “Paradise Lost 3: Purgatory” screening|In August 2011 after spending almost two decades in custody, they plead guilty to lesser charges while maintaining their innocence, and were set free|”I hadn’t seen daylight in almost a decade|(CBS/AP) The West Memphis Three are scheduled to appear at a screening of the HBO film “Paradise Lost 3: Purgatory” at the New York Film Festival at the Lincoln Center in New York|The West Memphis Three were allowed to change their original plea because new DNA evidence has surfaced|He had been on Death Row for 18 years|