A mother campaigning for a fresh investigation into her son's death is to meet senior law officers to discuss the case.
Colin Marr, 23, of Lochgelly, Fife, died from a single stab wound to the chest in July 2007 following a row with his partner.
His relatives are challenging the police conclusion that his death was suicide.
An independent review published in July found serious failings in the initial investigation by Fife Constabulary.
Former senior CID officer David Swindle said in his report that Mr Marr's death was suspicious and should have been treated as such.
Mr Marr's mother Margaret Graham and stepfather Stuart will meet Solicitor General Lesley Thomson and Crown Agent Catherine Dyer later.
Local MSPs John Park and Willie Rennie, who lobbied for the meeting, will also attend.
Stuart Graham told the Courier newspaper ahead of the appointment: "It's a big step forward."
In his July 30 report, Mr Swindle recommended a review of fingerprint and forensic evidence, and the re-interviewing of five witnesses.
The Solicitor General is deputy to the Lord Advocate, head of Scotland's prosecution service. The Crown Agent acts as legal advisor to the Lord Advocate.