In the wake of Malcolm-Jamal Warner's sudden death at age 54, Bill Cosby shared a personal tribute to the actor who portrayed his son, Theo Huxtable, on the long-running NBC sitcom “The Cosby Show.” Warner died Sunday after an accidental drowning while swimming off the Caribbean coast of Costa Rica during a family vacation.

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.