HBO's "Harry Potter" television adaptation is slowly coming together, but we're still a ways out from actually getting it on our screens. That said, we are learning more and more as the months go on.

Here is everything we know so far about HBO’s “Harry Potter” TV series.

Back in 2004, Whitehouse appeared in one of the best Harry Potter movies, Harry Potter and the Prisoner of Azkaban. He played Sir Cadogan in it, and he spent all his time in the paintings, as one of the many living portraits in the school.