The legendary singer-songwriter Steve Earle describes how Truman Capote's true-life murder story, "In Cold Blood", captured his imagination as a 12-year-old boy. He first encountered the tale - a dramatic account of a multiple killing in Kansas - in the film version, shown at a local drive-in movie house. "I had to find a copy of that book and read it for myself," he says, stealing the volume from his mother's handbag and devouring it over the next couple of days. Capote's story inspired his decades-long campaign against the death penalty. And the book led him to feel empathy for the killers at the centre of the tale, thanks to "the power of intellect and humanity flowing from heart to hand to pen to page."