The Scarlet Witch’s true nemesis has moved one step closer to the MCU five years after WandaVision ended. WandaVision was the first in a trilogy of shows centered around Wanda Maximoff and her family. The show was a precursor to Wanda’s descent into Darkhold-influenced villainy in Doctor Strange in the Multiverse of Madness, where the Scarlet Witch ostensibly died. Questions still hang over her death, however, as her body was never seen and her arc still feels unfinished. These questions have reignited with Agatha All Along, which is the second in the trilogy that will finish with Vision’s solo series.

https://screenrant.com/agatha-all-along-chthon-setup-theory/