Hollywood star Susan Sarandon is asking Americans for help to secure the release of a death row inmate she believes is innocent.
Richard Glossip, 52, is due to die by lethal injection next month but has always maintained he is not guilty of murder.
He was sentenced to death for his part in the killing of motel owner Barry Alan Van Treese in January 1997.
The actress, who won an Oscar for her portrayal of anti-capital punishment campaigner Sister Helen Prejean in the 1995 film Dead Man Walking, described Glossip's two trials as 'ridiculous' and said there was no physical evidence to implicate him.
Ms Sarandon told Sky News that the scheduled execution in Oklahoma shows everything that is wrong with the death penalty in America.
Glossip was convicted on the testimony of Justin Sneed, who confessed to beating Treese to death with a baseball bat, but said he had been hired to do it by Glossip.
Sneed was given a prison sentence whereas Glossip was sentenced to death and has spent the last 17 years on death row, reports the Daily Mail.
The Thelma and Louise actress has now called on the US public to write to Oklahoma Governor Mary Fallin, calling for her intervention to grant a stay of execution.
"Once a mistake has been made within a judicial system, people just do not want to admit that mistake has been made and it becomes impossible to readdress them," she said.
"And the only thing now that is going to give him a chance to survive is public opinion - is public embarrassment."
She also described the governor as a 'horrible person' for refusing to intervene.