The family of Keren Rowland, who was found dead after disappearing one night in the early 1970s, haven't given up hope of uncovering the truth about what happened to her.
They believe she may have been the first victim of notorious serial killer Ivan Milat and say had police made the connection, he could have been stopped much earlier in his lethal campaign.
Ms Rowland's younger brother, Steve Rowland, will be among those appearing at a NSW parliamentary inquiry into unsolved murders and missing persons between 1965 and 2010, beginning on Thursday.