The new Disney+ series is now streaming, and Marvel fans have questions! Find out all the details about ‘Agatha All Along.’

Marvel has a new TV show on deck, and this one should seem familiar. The aptly named "Agatha All Along" is centered on Kathryn Hahn's character from "WandaVision" and is indeed named for the catchy tune she sang in that series.

Agatha All Along, the spooky spinoff series from WandaVision creator Jac Schaeffer, centers on antagonist Agatha, a dark witch who wielded a book called the Darkhold and tried to steal Avenger Wanda Maximoff's powers. At the end of WandaVision, Wanda cast a spell on Agatha trapping her in a delusion.