John Lithgow is headlining Harry Potter's HBO reboot. Courtesy of Getty Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Logo text John Lithgow has admitted that he almost made a U-turn on his decision to play Albus Dumbledore in HBO's Harry Potter reboot. The actor is among the A-list stars who signed onto the TV show adaptation of J.K.