In 2002, Mark Lundy was found guilty of killing his wife Christine and 7-year old daughter Amber, but investigative journalist Mike White has some questions about the prosecution's case.

Christine Lundy and her seven-year old daughter Amber were brutally killed in their own home in August, 2000.

Two years later, Mark Lundy, Christine's husband and Amber's father, was convicted of their murders.

Mark Lundy was in Wellington on a business trip, but became concerned when he could not get hold of his wife. He asked his brother-in-law to check on his family.

When Mr Weggery stepped into the Lundys' home he found a horrific scene. His niece lay dead in the doorway of her parents' bedroom. Christine Lundy's body lay on her bed in a room spattered with blood.

Both had been brutally bludgeoned to death

It would be five months before the police made an arrest. The public were stunned when they learned it was the deceased's husband and father, Mark Lundy, who was charged.

The motive suggested for the killings was the family's dire financial situation.

Mike White began investigating Mark Lundy's case in 2007 because the evidence did not seem to add up. Thirteen years later, twenty years after the deaths of Christine and Amber, he published an article in North and South titled: Anatomy of a Scandal, 20 years of lies, cover ups, incompetence and shonky science.

Mark Lundy is still battling to clear his name.

Go to this episode on rnz.co.nz for more details