Sean Williams was born in Whyalla, South Australia in 1967. He is a prolific science fiction writer with an international reputation. Author of over sixty published short stories and eighteen novels, including the Books of the Change and 'The Resurrected Man', his work has been published around the world in numerous languages and on-line. His novel 'The Crooked Letter' was the first fantasy novel in the history of Australian speculative fiction to win both Ditmar and Aurealis Awards. Sean Williams and Simon Brown are both Australian science fiction writers, who from 1996 to 2003 collaborated to produce 'The Butler Codex' and a number of short stories. Williams lives in Adelaide, where he served as Chair of the SA Writers' Centre from 2001 to 2003.

Simon Brown was born in Sydney in 1956. His short stories have appeared in magazines and anthologies in Australia and the U.S.A. His novels include Privateer (1996), Winter (1997), Inheritance (2000), Fire and Sword (2001), Sovereign (2002), Born of Empire (2004) and Rival's Son (2005). A collection of his short stories, Cannibals of the Fine Light, was published in 1998. He lives in Mollymook, N.S.W.