David Doyle had already started his acting career in 1959. "Charlie's Angels" came smack in the middle of his career, but was succeeded by a huge list of minor roles on popular shows like "Murder, She Wrote", "Hart to Hart", "The Love Boat" and "Foofur". Doyle sadly passed away in Los Angeles, California from a heart attack on February 26, 1997. He was 67 at the time.