Clayton Weatherston’s appeal has been dismissed.

Convicted murderer Clayton Weatherston’s attempt to appeal to the Supreme Court has been dismissed.

The court confirmed last month that Weatherston had asked for an appeal to be heard as the first step of a two-step process.

Weatherston was found guilty of 22-year-old Sophie Elliott’s murder in January 2008 at her Dunedin home and was sentenced to life imprisonment, with a minimum non-parole period of 18 years. He stabbed her 216 times.

In June the Court of Appeal dismissed Weatherston’s appeal against his conviction for killing his ex-girlfriend, Sophie.

His lawyer, Robert Lithgow, QC, argued in the Appeal court that debate about the defence of provocation meant Weatherston did not get a fair trial.

No would he be so kinds as to go and do what Antonie Dixon did.