When a life hangs in the balance, what does beyond a reasonable doubt really mean? In 2011, the state of Georgia executed Troy Davis for the killing of Savannah policeman Mark MacPhail. The case drew international attention. On Oct. 21, 2018, GPB presents: "Beyond Reasonable Doubt: The Troy Davis Project." This work by Atlanta playwright Lee Nowell explores the powerful convictions and doubts on both sides of the case.