A jailhouse snitch who gave evidence that led to the prosecution of David Tamihere for the murders of two Swedish tourists will not be named.
Longtime inmate Arthur Taylor has had his appeal to name "Witness C" dismissed by the Court of Appeal, in a decision released on Monday.
However, Witness C will still go on trial on charges of perjury and attempting to pervert the course of justice on Monday, brought as a private prosecution by serial prison litigant Taylor.
Tamihere was convicted of the murders of Heidi Paakkonen and Sven Hoglin in 1989, but has always maintained his innocence.
He was released on parole in 2010.