From Emmy-nominated roles to his casting as Snape in HBO’s ‘Harry Potter’ series, find out more about the British actor here.

John Lithgow is playing Dumbledore in the upcoming TV adaptation of ‘Harry Potter.’ Meet the entire cast so far.

The 66-year-old British actor was previously cast as Sir Cadogan, a talking painting tasked with guarding the Gryffindor Common Room, in the 2004 film Harry Potter and the Prisoner of Azkaban ...