An interview with legendary US fantasy author Raymond E Feist inspired Duncan to begin writing fantasy. He writes on the train, to and from work in Sydney. His first series, The Dragon Sword Histories, concluded with the Australian bestseller The Radiant Child. His second series, The Empire Of Bones, began with the Australian bestseller Bridge Of Swords. These were both published through HarperCollins. His new series, The Last Quarrel, is available through Momentum Books.