Truman Capote’s legendary masked ball, at New York City’s Plaza Hotel on November 28, 1966, was a hyped-up media event meticulously masterminded by the self-promoting, social-climbing author of In Cold Blood. Actress Candice Bergen was bored at the ball; Capote’s elevator man danced the night away with a woman who didn’t know his pedigree; and Norman Mailer sounded off about Vietnam. This frothy effort retreads ground already covered by Gerald Clarke, George Plimpton and Sally Bedell Smith, among others.