A former exotic dancer who made headlines for falsely accusing three Duke lacrosse students of raping her has been freed from prison in the 2011 slaying of her boyfriend. Crystal Mangum, 47, was let out of the North Carolina Correctional Institution for Women in Raleigh just before 10 a.m. Friday after serving a 14-to-18-year sentence for fatally stabbing beau Reginald Daye in April 2011, according to a report by NBC News. .....