Three men spent 36 years in prison for allegedly murdering a 14-year-old, and the detective hid the testimonies of three witnesses which could exonerate them

https://web.archive.org/web/20191130201305/https://www.theguardian.com/us-news/2019/nov/30/baltimore-men-exonerated-36-years-alfred-chestnut-ransom-watkins-andrew-stewart