Robert Paul "Tad" Williams is an American fantasy and science fiction writer. He is the author of the multivolume Memory, Sorrow, and Thorn series, Otherland series, and Shadowmarch series as well as the standalone novels Tailchaser's Song and The War of the Flowers. source
A film has a beginning, middle, and an end. There is a certain amount of time that you have to embody these people. You know the entire story arch. But on TV, you have to let your guard down. You don't know how long the show is going to last. There is this excitement that comes with developing a character long-term.