In her book "Impostors", Sarah Burton looks at the cases of individuals who have pulled off some of the most extraordinary deceptions. Among them are Chief Buffalo Child Long Lance who was a glamorous film star, journalist, athlete, war hero, champion of native Americans who was actually Sylvester Long, a black man from the Deep South during the time of the Segregation Laws in the USA; well-known jazz musician, Billy Tipton, stepfather and scout-master who lived most of her life as a man. She married four women before her real identity was discovered when she died in 1989; and the most famous impostor of all, Ferdinand Demara, who posed variously as a surgeon, a university lecturer, a priest and a warden in a top security prison who was so good at his 'chosen' professions that, when unmasked, was often asked to return to the job.