The Hollywood actress has spent months fighting for Glossip in a case that mirrors the plot of her 1995 movie Dead Man Walking.

Sarandon has teamed up with the nun she played in the film, Sister Helen Prejean, in a bid to help Glossip, who was convicted of ordering a killing in Oklahoma in 1977.

It was based on evidence provided by the man who carried out the murder, but many supporters believe Glossip is innocent of the crime.

He was granted an emergency two-week stay of execution earlier this month (Sep15), but officials at the Oklahoma Court of Criminal Appeal have since ruled the execution can go ahead on Wednesday.

The news has disappointed Sarandon, but she has vowed to keep fighting for Glossip.

She hopes his legal team can score a last-minute victory by taking the case to the U.S. Supreme Court.

In a post on, the actress writes, "In a 3-2 decision, OK (Oklahoma) has decided to move forward with Richard Glossip's execution on Wednesday. New evidence won't be considered because it was filed so late and it was filed so late in part because Richard couldn't afford capable representation from the start. Our judicial system is broken and our only hope now lies with the Supreme Court."