Here's everything to know about HBO's 'Harry Potter' series, which may have recently cast its new Dumbledore After seven books, eight movies, one play and a whole spin-off series, Harry Potter is debuting on the small screen for the first time.

HBO’s upcoming “Harry Potter” series has found its Professor Albus Dumbledore in actor John Lithgow — known for his previous roles in “Conclave,” “The Crown” and “Footloose.” Lithgow confirmed to Screenrant that he had committed to the role as Headmaster of Hogwarts School of Witchcraft and Wizardry.

Is John Lithgow playing the new Dumbledore? Here's what he said in an interview and why people are speculating.

"It's going to define me for the last chapter of my life, I'm afraid." John Lithgow is heading to Hogwarts. The 3rd Rock From the Sun star confirmed recent rumors that he'll be playing Professor Albus Dumbledore on HBO's forthcoming Harry Potter TV series in an interview with Screenrant published Tuesday.

It seems John Lithgow spilled the (Bertie Bott's Every Flavor) beans about his involvement in HBO's in-the-works 'Harry Potter' series. 'A total surprise to me,' he says.

HBO’s Harry Potter series casts John Lithgow as Dumbledore, and the actor responds to concerns that he’s an American undertaking the role.

John Lithgow is officially HBO’s new Dumbledore. That means a fresh take on the iconic role! Today on Collider, we’re breaking down how every actor prepared to play the legendary headmaster.

John Lithgow attends The Old Man" Season 1 NYC Tastemaker Event at ... [+] MOMA on June 14, 2022 in New York City. (Photo by Jamie McCarthy/) The first confirmed actor in the upcoming Harry Potter live-action TV series is John Lithgow who will be playing Hogwarts headmaster and wizard legend,

John Lithgow is opening up about about joining HBO's Harry Potter series where he will take on the role of Albus Dumbledore.

When asked about the offer to play Dumbledore, Lithgow described the decision as "not easy," recognizing it could define the final phase of his illustrious career.

John Lithgow being cast as Dumbledore in the upcoming "Harry Potter" series is more significant than you might think