In the aftermath of Williams’ execution there has been an outcry from the public due to the doubts over his conviction, especially since it was reported in August that a new development showed that the knife used in the murder was believed to have been contaminated by DNA from a prosecutor and investigator working on the case.

Marcellus Williams was backed in his appeals for clemency by St. Louis County Prosecuting Attorney Wesley Bell.

From legal challenges to clemency from the governor, here are the ways Missouri inmates can attempt to get off death row.