Jamal Warner, best known for his role on "The Cosby Show," has died in an accidental drowning in Costa Rica, where he was vacationing with his family, officials there said. He was 54. Warner drowned Sunday afternoon at a beach in Cocles de Limón on Costa Rica's Caribbean coast,

Malcolm-Jamal Warner, who as teenage son Theo Huxtable on “The Cosby Show” was central to a cultural phenomenon that helped define the 1980s, died at 54 in an accidental drowning in Costa Rica, authorities there said Monday.