India, Feb. 26 -- American actor John Lithgow has been cast as Hogwarts Headmaster Albus Dumbledore in HBO's Harry Potter TV show. The 79-year-old confirmed the news in an interview with ScreenRant.

"Well, it came as a total surprise to me. I just got the phone call up at the Sundance Film Festival for yet another film, and it was not an easy decision because it's going to define me for the last chapter of my life, I'm afraid. But I'm very excited. Some wonderful people are turning their attention back to Harry Potter. That's why it's been such a hard decision. I'll be about 87 years old at the wrap party, but I've said yes," Lithgow told the outlet.

John Lithgow has starred in numerous successful TV shows and movies throughout his care...