To the outside world, they were the icons of high society – the most glamorous and influential women of their age.

To Truman Capote they were his Swans: the ideal heroines, as vulnerable as they were powerful. They trusted him with their most guarded, martini-soaked secrets, each believing she was more special and loved than the next…

Until he betrayed them.

‘Writers write. And one can’t be surprised if they write what they know.’