You know the man at a glance. And he still carries a badge. Don Johnson (Miami Vice, Nash Bridges) now prowls L.A.'s mean streets as Det. Jerry Beck in Dead-Bang, an explosive thriller drawn from Beck's true-life exploits and directed by John Frankenheimer (The Manchurian Candidate, Seven Days in May). Beck's life is on the skids. The one thing he has going for him is police work. His street smarts and instinct for trouble have catapult