Kathryn Hahn returns as Agatha Harkness in the Marvel Cinematic Universe's first horror-themed series, "Agatha All Along."

Set after the events of "WandaVision," the trailer hints that Agatha has lost her powers and now lives a dual life as a detective investigating Wanda's supposed death.

The series introduces new characters like the witch Rio Vidal (played by Aubrey Plaza), who guides Agatha toward reclaiming her abilities through the mysterious Witches' Road.

The show also features Joe Locke as Billy Kaplan and Sasheer Zamata as Jennifer Kale, among others.

"Agatha All Along" premieres with its first two episodes on Disney Plus on September 18.