Marcellus Williams to be executed in Missouri woman's brutal murder; clemency denied USA TODAYProsecutors say evidence clears him. He’s set to be executed today. The Washington PostLawyers seek Supreme Court intervention hours before a Missouri inmate’s planned execution KTVI Fox 2 St. LouisAttorney Statement: Missouri Governor Denies Clemency to Marcellus Williams Innocence ProjectMissouri Supreme Court declines to halt Tuesday’s execution of a death row inmate who prosecutor says might be innocent CNN