A Perth man who admitted being obsessed with serial killers and wrote about embracing his "darkness" before he murdered his three children, wife and mother-in-law is appealing his sentence of life without parole.
Anthony Robert Harvey, 25, pleaded guilty to murdering his family and became the first person in Western Australia ordered by a judge never to be eligible for parole.
But he is now fighting that decision by taking his case to the WA Court of Appeal.