Image Credit: Variety via Getty Images The news of Malcolm-Jamal Warner's death has left many of his colleagues, friends, family members, and fans in shock. The actor-who first gained fame as Theo Huxtable on The Cosby Show-went on to build a lasting career in television, film, and music. He remained a respected and familiar presence in the industry up until his death at 54 on July 20, while vacationing with his family in Costa Rica. Below, learn more about the circumstances surrounding his passing, the official cause of death, and a closer look at his family and career.