Colleen Egan is Assistant Editor at The West Australian newspaper. She played a role in obtaining the acquittal of Andrew Mallard, a Western Australian man who had been wrongfully convicted of murder. She also unwittingly contributed to the political downfall of Western Australian Liberal powerbroker Noel Crichton-Browne when he made inappropriate sexual comments to her at a Liberal Party conference.
Egan, who has principally been employed as a print journalist by The Sunday Times, first established herself as an investigative journalist in 2000 when her exclusive interviews with terrorist Jack Roche were published in The Australian. Her work has since taken her to London, covering trials at the Old Bailey, and back to Perth as a weekly columnist for The Sunday Times. She is now an Assistant Editor at The West Australian newspaper.
Egan was approached in 1998 by the family of Andrew Mallard who had been convicted and detained in 1995 for the murder of jeweller, Pamela Lawrence. Her subsequent investigations revealed that Mallard’s conviction had been largely based on a forced confession. Her book on the case, "Murderer No More: Andrew Mallard and the Epic Fight that Proved his Innocence", was published by Allen & Unwin in June 2010.
In 2011 Egan also wrote in defence of convicted murderer and Gypsy Jokers outlaw motor cycle gang associate Gary Ernest White who was convicted partially on the testimony of former Gypsy Jokers member Sidney Reid. Egan's brother Eamonn Egan is himself a long serving member of the Perth Gypsy Jokers outlaw motor cycle gang.
- Walkley Award for Most Outstanding Contribution to Journalism for 2006 for her role in the acquittal of Andrew Mallard.
- News Limited’s 2007 Sir Keith Murdoch Award for Journalism, also for the eight year investigation that led to the acquittal of Andrew Mallard.
- ABC Radio National's Media Report programme of Thursday, 10 August 1995 and from Crikey (crikey.com.au) on Thursday, 12 June 2008 - A Crikey list: MPs Behaving Badly.
- "Article from Sydney Morning Herald website, dated 27 November 2002". The Sydney Morning Herald. 27 November 2002. Retrieved 17 June 2008.
- "Murderer No More: Andrew Mallard and the Epic Fight that Proved his Innocence" by Colleen Egan, published by Allen & Unwin in June 2010.