Mr Lubbock wants to find out what happened to his son
The father of a man found dead in Michael Barrymore's swimming pool has staged a protest at the opening night of the entertainer's Fringe show.
Stuart Lubbock, 31, was found at the star's Essex home in March 2001.
Terry Lubbock said he wanted to raise the profile of his son's death ahead of an Independent Police Complaints Commission report into the incident.
Barrymore, whose career collapsed after Mr Lubbock's death, features in a show about comedian Spike Milligan.
Mr Lubbock Snr, 62, is campaigning to find out exactly what happened to his son.
He is unhappy that an inquest in 2002 recorded an open verdict into his death.
The attorney general last week refused Mr Lubbock permission to appeal to the High Court for a new inquest into the death.
Mr Lubbock believes his son was sexually assaulted and killed.
He hopes the findings of the IPCC in September could give him new grounds to appeal for a second inquest.
He staged a demonstration outside Edinburgh's Assembly Rooms venue on George Street at the preview showing of Surviving Spike on Thursday afternoon.
Michael Barrymore feature in a show about comedian Spike Milligan
"I want to reignite the fire that has diminished about my son's death," he said.
"There has not been anyone charged. Somebody inflicted those injuries and I am campaigning to find out who.
"We must try to get the truth out. I am not pointing the finger but I want to draw attention to what happened to my son at Barrymore's house."
Mr Lubbock said he had tickets for the show, but did not go in and did not disrupt the entertainer's performance.
He added: "I had no interest in seeing the play. My point is to get justice for my son."
Mr Barrymore's spokeswoman was not available for comment.