The Cosby Show's Geoffrey Owens Laments Death Of co-star Malcolm-Jamal Warner: "This Tragedy Has Almost Left Me Speechless"

Malcolm-Jamal Warner, the actor perhaps best known for starring in the TV sitcom "The Cosby Show" as son Theodore "Theo" Huxtable, has died at 54. Warner drowned off the coast of Costa Rica on Sunday, Costa Rican National Police told ABC News. Warner's official cause of death was asphyxia, police said.

In addition to eight seasons on the hit NBC sitcom as the son of Bill Cosby's Cliff Huxtable and Phylicia Rashad's Clair Huxtable, Warner was also known for his role as Malcolm Mc

“The Cosby Show,” starring Cosby as Dr. Heathcliff “Cliff” Huxtable, an obstetrician-gynecologist, and Phylicia Rashad as his wife, Clair, a successful attorney, blazed a historic trail in primetime television with the depiction of an educated, upper-middle-class African American family.

When audiences met Theo Huxtable, playing a high school freshman in 1984’s pilot episode of "The Cosby Show," his voice was squeaky, his room was a mess, and he was pleading with his dad, Heathcliff,