It was 1 a.m. on a Saturday when the call came. A friend, a University of Virginia freshman who earlier said she had a date that evening with a handsome junior from her chemistry class, was in hysterics. Something bad had happened. Arriving at her side, three students —“Randall,” “Andy” and “Cindy” as they were identified in an explosive Rolling Stone account — told The Washington Post that they found their friend in tears. Jackie appeared traumatized, saying her date ended horrifically, with the older student parking his car at his fraternity, asking her to come inside, and then forcing...