He partied with high society America but caused outrage when he spilled their secrets. Ebs Burnough talks us through his new film about Answered Prayers – the ‘smart, salacious’ novel Capote never finished

When Truman Capote died in 1984, he left the remains of a novel he had been hatching for nearly two decades, and talking about for almost as long. Answered Prayers, the story of a budding writer screwing his way through polite society, was intended to be Capote’s most explosive achievement. He likened it to a deadly weapon. “There’s the handle, the trigger, the barrel, and, finally, the bullet,” he told People magazine. “And when that bullet is fired from the gun, it’s going to come out with a speed and power like you’ve never seen – wham!” Having bragged about the book for years, all he had to do now was write it.

A contract was signed in 1966, but advance chapters published in Esquire magazine nine years later proved to be far below the standard of his defining successes, Breakfast at Tiffany’s and the “non-fiction novel” In Cold Blood. There was a cost to his social reputation as well as his literary one. As soon as the socialites and wealthy wives with whom he had mingled happily for years – including Slim Keith, Babe Paley and Gloria Vanderbilt, whom he called his “swans” – saw how casually he had spilled their most intimate secrets, those friendships were dead. Capote hadn’t bitten the hand that fed him. He’d gnawed it off at the wrist.