John Lithgow will play the Hogwarts headmaster in the HBO show, with Paapa Essiedu filling the role of Severus Snape.

HBO's 'Harry Potter' series casts Luke Thallon as Professor Quirrell and Paul Whitehouse as Argus Filch, with filming set to ...

"I May Destroy You" and "Black Mirror" actor Paapa Essiedu will play the vital role of Potions Professor Severus Snape in the ...