HBO's 'Harry Potter' TV show recasts all of the Hogwarts characters with new actors. See who's who in this cast guide.

John Lithgow, the 79-year-old Tony Award and Academy Award nominated actor, known for his roles in Terms of Endearment and Conclave will join the cast as Albus Dumbledore, the headmaster of Hogwarts ...

Harry Potter' Series sets John Lithgow, Janet McTeer, Paapa Essiedu and Nick Frost as series regulars. Luke Thallon &  Paul ...