WandaVision Episode 8 review: S1E8 revels in last week's reveal James City A.M.'s film editor and a regular on both TV and radio discussing the latest movie releases If you’ve been watching WandaVision every week (and if you haven’t, why are you reading this?), you’ll have been humming a certain theme tune for the past week. Yep, it was Agatha All Along! Or was it? Following the jaw-dropping twist last week that kindly neighbour Agnes (Kathryn Hahn) was in fact a powerful witch named Agatha Harkness, we get a stroll through Marvel’s history, in an episode presumably designed for those who haven’t quite caught up with the films.