From Errol Morris, the award-winning director of The Thin Blue Line, comes the provocative and chilling true story of Fred A. Lauchter, Jr., the son of a prison worker and a self-taught execution expert who consulted with prisons across the country to make capital punishment more humane. When Leuchter is called in as a high-profile expert in a sensationalistic Canadian trial, his ego, bravado and absurd testimony reach national media prominence.