Malcolm-Jamal Warner, who played Theo Huxtable on "The Cosby Show," has died at 54, with Bill Cosby reflecting on their relationship and Warner's professionalism on set.

Malcolm-Jamal Warner, who starred as Theo Huxtable on the beloved sitcom The Cosby Show, died tragically while on a family vacation in Costa Rica. Warner drowned after being caught in a high current and asphyxiating, Costa Rican authorities told ABC News. Now, what may be the final photo of ...