Missing evidence, hidden files and incomplete investigations are some of the challenges families of Ivan Milat's suspected victims say they have faced in their quest to find answers.
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 Milat and argue if police made the connection early on he could have been stopped much earlier in his lethal campaign.
Ms Rowland's younger brother, Steve Rowland, appeared on Thursday at a NSW parliamentary inquiry into unsolved murders and missing persons between 1965 and 2010.
"We have and will continue to search for answers but we're finding it incredibly difficult to get the same support and help from the investigating authorities," he told the committee.