In this episode, we talk about Larry Griffin who was executed in 1995. Griffin maintained his innocence until he was executed. About 10 years after he was put to death, his case was reviewed again, and investigators now believe he could have been innocent. 

Sources: 

https://missourideathrow.com/2008/12/state-of-missouri-v-larry-griffin/

https://murderpedia.org/male.G/g1/griffin-larry.htm

https://www.nytimes.com/2005/07/19/us/executed-man-may-be-cleared-in-new-inquiry.html