Errol Morris’s unique documentary dramatically re-enacts the crime scene and investigation of a police officer’s murder in Dallas, Texas. Briefly, a drifter (Randall Adams) ran out of gas and was picked up by a 16-year-old runaway (David Harris). Later that night, they drank some beer, smoked some marijuana, and went to the movies. Then, their stories diverged. Adams claimed that he left for his motel, where he was staying with his brother, and went to sleep. Harris, however, said that they were stopped by police late that night, and Adams suddenly shot the officer approaching their car…