Debi Marshall is a journalist, producer for television and author who lives in Hobart. She has written a number of biographies and true crime titles, including The House of Hancock: The Rise and Rise of Gina Rinehart, Justice In Jeopardy: The unsolved murder of baby Deidre Kennedy, The Devil's Garden, Lambs to the Slaughter and Killing For Pleasure: the definitive story of the Snowtown serial killings.