18. Brad Renfro (Age 25)

Brad Renfro burst onto the scene at 13 in The Client and starred in Tom and Huck and Sleepers. His raw talent made him a standout child actor of the 1990s.
Brad died at 25 from acute heroin and morphine intoxication after a series of legal and personal struggles. His early promise was overshadowed by the challenges of sudden fame.