Derrick Hamilton was convicted of murder and served 21 years in New York State prisons. He is among a group of innocent men from Brooklyn who were wrongfully convicted based on false evidence obtained by former detective Louis Scarcella. In prison, Hamilton become a jailhouse lawyer and helped many inmates with their innocence cases. Paroled in 2012, Hamilton won a landmark appellate ruling reopening his case based upon a claim of actual innocence, which the appellate court has adopted as a legal remedy to overturn convictions. He was finally exonerated in 2015 by former Brooklyn District Attorney Ken Thompson's Conviction Review Unit.