Disgraced comic Bill Cosby has been gutted by the shock drowning death of TV son Malcolm-Jamal Warner, and friends fear the tragedy will be the end of him, the National Enquirer can reveal. Sources say Cosby,

Actor and director Malcolm-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.