The sad thing is, his case is not unique. Way too many people are convicted for crimes in the same way where some "cell mate" has heard the other person confess to crimes, and then the "informant" gets rewarded.
We seriously need to change how things are done especially in cases where the only evidence is from incentivized informant testimony.
If the Missouri governor won't pardon him, shouldn't Biden be able to pardon him? Hopefully enough noise is made that he takes notice.
Unfortunately we've all seen this play out before where someone who can prove they are innocent is still executed.