Determined Treasury agent investigating the moonshine violence. He repeatedly attempts to recruit Lucas to help eliminate gangster Carl Kogan but faces rejection. After learning Lucas never actually served overseas, Barrett deploys a massive dragnet to intercept his final run. He successfully arrests Kogan for murder but arrives too late to assist Lucas after the fatal crash.
Lucas and Barrett are direct opponents, with the agent trying to stop the smuggler's operations.
Barrett is the primary law enforcement force hunting Kogan for his violent crimes.
Roxanna's warning indirectly assists Barrett's law enforcement efforts.
Though they never interact directly, their roles intersect in the broader effort to end the bloodshed.
Explore the full interactive character relationship map of Thunder Road