The office that prosecuted him wants his murder conviction overturned. The family of the woman he was convicted of killing has agreed to a life sentence for the inmate instead of the death penalty. But Marcellus Williams is scheduled to die tonight after Missouri’s supreme court and governor refused to grant a stay of execution following a flurry of appeal efforts based on what his attorneys describe as new evidence.

The Missouri Supreme Court will hear arguments as attorneys working on behalf of Marcellus Williams seek to save him, just a day before his scheduled execution

One day before he’s scheduled to be executed, a Missouri death row inmate could learn whether his fate will change when the state’s Supreme Court on Monday hears arguments in his case.