Oscar-winning actress Blanchett will play a canine psychologist in a storyline that is a callback to the pilot episode. Stranger Things star Harbour will portray an alternate version of Mr. Burns. ALSO: FXX will air a record-breaking 661-episode Simpsons marathon over the holidays.
TOPICS: The Simpsons, FOX, FXX, Cate Blanchett , David Harbour, Marathons