Evidence needed for Neill-Fraser's mercy bid

CONVICTED killer Susan Blyth Neill-Fraser's legal team will look for fresh evidence after an appeal to overturn her conviction was quashed by the High Court last week.

West Australian QC Tom Percy and Hobart lawyer Greg Barns have been tasked to find new witnesses or DNA evidence strong enough to form a petition of mercy to take to Attorney-General Brian Wightman.

He then has the option to seek advice from the Court of Criminal Appeal on the petition, or refer the whole matter to the court.

Five convictions have been overturned by Australia's High Court in the past 15 years.

The most famous was that involving Andrew Mallard, who had a life sentence for murder overturned in 2006 after 12 years in jail.

He received a $3.25 million payout from the West Australian government in 2009 for a wrongful conviction.

Four of the overturned High Court convictions have occurred in Western Australia and Mr Percy worked on two of those.

Neill-Fraser's husband, Bob Chappell, 65, vanished from his yacht moored at Sandy Bay on Australia Day three years ago.

His body, or a murder weapon, have never been found.

Neill-Fraser was charged with murder seven months after the disappearance.

Her family will meet their legal team tomorrow to discuss the latest move to free her from jail.